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MilitaryTerms.INFO - Terms and definitions used in the US Military

























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Acronyms A B C D E F G H I J K L M N O P Q R S T U V W - Z Resources

Glossary of Military Terms

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1. The process of determining the friendly or hostile character of an unknown detected contact. 2. In arms control, the process of determining which nation is responsible for the detected violations of any arms control measure. 3. In ground combat operations, discrimination between recognizable objects as being friendly or enemy, or the name that belongs to the object as a member of a class. Also called ID.

iidentification, friend or foe
A device that emits a signal positively identifying it as a friendly. Also called IFF. See also air defense.

identification friend or foe personal identifier
The discrete identification friend or foe code assigned to a particular aircraft, ship, or other vehicle for identification by electronic means.

identification, friend or foe/selective identification feature procedures
The directives that govern the use of identification, friend or foe selective identification feature equipment. See also identification, friend or foe.

identification maneuver
A maneuver performed for identification purposes.

igloo space
Area in an earth-covered structure of concrete and/or steel designed for the storage of ammunition and explosives. See also storage

ignition system
See firing system.

Directing radar energy at an aircraft or surface vessel sufficient to obtain radar targeting information (fire control solution).

image format
Actual size of negative, scope, or other medium on which image is produced.

image motion compensation
Movement intentionally imparted to film at such a rate as to compensate for the forward motion of an air or space vehicle when photographing ground objects.

Collectively, the representations of objects reproduced electronically or by optical means on film, electronic display devices, or other media.

imagery collateral
The reference materials which support the imagery interpretation function.

imagery correlation
The mutual relationship between the different signatures on imagery from different types of sensors in terms of position and the physical characteristics signified.

imagery data recording
The transposing of information relating to the airborne vehicle and sensor, such as speed, height, tilt, position, and time, to the matrix block on the sensor record at the moment of image acquisition.

imagery exploitation
The cycle of processing and printing imagery to the positive or negative state, assembly into imagery packs, identification, interpretation, mensuration, information extraction, the preparation of reports, and the dissemination of information.

imagery intelligence
Intelligence derived from the exploitation of collection by visual photography, infrared sensors, lasers, electro-optics, and radar sensors such as synthetic aperture radar wherein images of objects are reproduced optically or electronically on film, electronic display devices, or other media. Also called IMINT. See also intelligence; photographic intelligence.

imagery interpretation
1. The process of location, recognition, identification, and description of objects, activities, and terrain represented on imagery. 2. The extraction of information from photographs or other recorded images. Also called photographic interpretation.

imagery interpretation key
Any diagram, chart, table, list, or set of examples, etc., which is used to aid imagery interpreters in the rapid identification of objects visible on imagery.

imagery pack
An assembly of the records from different imagery sensors covering a common target area.

imitative communications deception
That division of deception involving the introduction of false or misleading but plausible communications into target systems that mimics or imitates the targeted communications. See also deception; target system.

imitative electromagnetic deception
See electromagnetic deception.

immediate airlift requests
Requests generated that, due to their time-critical nature, cannot be filled by a planned mission.

immediate air support
Air support to meet specific requests which arise during the course of a battle and which by their nature cannot be planned in advance. See also air support.

immediate decontamination
Decontamination carried out by individuals immediately upon becoming contaminated. It is performed in an effort to minimize casualties, save lives, and limit the spread of contamination. Also called emergency decontamination. See also contamination; decontamination.

immediate destination
The next destination of a ship or convoy, irrespective of whether or not onward routing instructions have been issued to it.

immediately vital cargo
A cargo already loaded which the consignee country regards as immediately vital for the prosecution of the war or for national survival, notwithstanding the risk to the ship. If the cargo is carried in a ship of another nation, then that nation must agree to the delivery of the cargo. The use of this term is limited to the period of implementation of the shipping movement policy.

immediate message
A category of precedence reserved for messages relating to situations that gravely affect the security of national and multinational forces or populace and that require immediate delivery to the addressee(s). See also precedence.

immediate mission request
A request for an air strike on a target that, by its nature, could not be identified sufficiently in advance to permit detailed mission coordination and planning. See also preplanned mission request.

immediate nuclear support
Nuclear support to meet specific requests that arise during the course of a battle, and that by their nature, cannot be planned in advance. See also nuclear support; preplanned nuclear support.

immediate operational readiness
Those operations directly related to the assumption of an alert or quick-reaction posture. Typical operations include strip alert, airborne alert and/or indoctrination, no-notice launch of an alert force, and the maintenance of missiles in an alert configuration. See also nuclear weapon exercise; nuclear weapon maneuver.

immediate targets
Targets that have been identified too late, or not selected for action in time to be included in the normal targeting process, and therefore have not been scheduled. Immediate targets have two subcategories: unplanned and unanticipated. See also target.

iimpact action fuze
A fuze that is set in action by the striking of a projectile or bomb against an object, e.g., percussion fuze, contact fuze. Also called direct action fuze.

impact area
An area having designated boundaries within the limits of which all ordnance will detonate or impact.

impact pressure
The difference between pitot pressure and static pressure.

Procedures governing the mobilization of the force and the deployment, employment, and sustainment of military operations in response to execution orders issued by the Secretary of Defense. Also called IMP.

implementation planning
Operational planning associated with the conduct of a continuing operation, campaign, or war to attain defined objectives. At the national level, it includes the development of strategy and the assignment of strategic tasks to the combatant commanders. At the theater level, it includes the development of campaign plans to attain assigned objectives and the preparation of operation plans and operation orders to prosecute the campaign. At lower levels, implementation planning prepares for the execution of assigned tasks or logistic missions. See also joint operation planning.

implosion weapon
A weapon in which a quantity of fissionable material, less than a critical mass at ordinary pressure, has its volume suddenly reduced by compression (a step accomplished by using chemical explosives) so that it becomes supercritical, producing a nuclear explosion.

imprest fund
A cash fund of a fixed amount established through an advance of funds, without appropriation change, to an authorized imprest fund cashier to effect immediate cash payments of relatively small amounts for authorized purchases of supplies and nonpersonal services

imprest funds
Funds issued by Army and Air Force Exchange Service (AAFES) to a military organization to purchase beginning inventory for the operation of an AAFES imprest fund activity. See also Army and Air Force Exchange Service imprest fund activity.

Brief note in the margin of a map giving all or some of the following: date of publication, printing, name of publisher, printer, place of publication, number of copies printed, and related information.

improved conventional munitions
Munitions characterized by the delivery of two or more antipersonnel or antimateriel and/or antiarmor submunitions by a warhead or projectile.

improvised early resupply
The onward movement of commodities which are available on land and which can be readily loaded into ships.

improvised explosive device
A device placed or fabricated in an improvised manner incorporating destuctive, lethal, noxious, pyrotechnic, or incendiary chemicals and designed to destroy, incapacitate, harass, or distract. It may incorporate military stores, but is normally devised from nonmilitary components. Also called IED.

improvised mine
A mine fabricated from available materials at or near its point of use.

improvised nuclear device
A device incorporating radioactive materials designed to result in the dispersal of radioactive material or in the formation of nuclear-yield reaction. Such devices may be fabricated in a completely improvised manner or may be an improvised modification to a US or foreign nuclear weapon. Also called IND.

inactive aircraft inventory
Aircraft in storage or bailment and/or government-furnished equipment on loan or lease outside of the Defense establishment or otherwise not available to the Military Services.

inactive duty training
Authorized training performed by a member of a Reserve Component not on active duty or active duty for training and consisting of regularly scheduled unit training assemblies, additional training assemblies, periods of appropriate duty or equivalent training, and any special additional duties authorized for Reserve Component personnel by the Secretary concerned, and performed by them in connection with the prescribed activities of the organization in which they are assigned with or without pay. Does not include work or study associated with correspondence courses. Also called IDT. See also active duty for training.

Inactive National Guard
Army National Guard personnel in an inactive status not in the Selected Reserve who are attached to a specific National Guard unit but do not participate in training activities. Upon mobilization, they will mobilize with their units. In order for these personnel to remain members of the Inactive National Guard, they must muster once a year with their assigned unit. Like the Individual Ready Reserve, all members of the Inactive National Guard have legal, contractual obligations. Members of the Inactive National Guard may not train for retirement credit or pay and are not eligible for promotion. Also called ING. See also Individual Ready Reserve; Selected Reserve.

inactive status
Status of reserve members on an inactive status list of a Reserve Component or assigned to the Inactive Army National Guard. Those in an inactive status may not train for points or pay, and may not be considered for promotion.

inbound traffic
Traffic originating in an area outside the continental United States destined for or moving in the general direction of the continental United States.

incapacitating agent
An agent that produces temporary physiological or mental effects, or both, which will render individuals incapable of concerted effort in the performance of their assigned duties.

incapacitating illness or injury
The casualty status of a person (a) whose illness or injury requires hospitalization but medical authority does not classify as very seriously ill or injured; or (b) seriously ill or injured and the illness or injury makes the person physically or mentally unable to communicate with the next of kin. Also called III. See also casualty status.

incentive type contract
A contract that may be of either a fixed price or cost reimbursement nature, with a special provision for adjustment of the fixed price or fee. It provides for a tentative target price and a maximum price or maximum fee, with price or fee adjustment after completion of the contract for the purpose of establishing a final price or fee based on the contractor's actual costs plus a sliding scale of profit or fee that varies inversely with the cost but which in no event shall permit the final price or fee to exceed the maximum price or fee stated in the contract. See also cost contract; fixed price type contract.

In information operations, an assessed event of attempted entry, unauthorized entry, or an information attack on an automated information system. It includes unauthorized probing and browsing; disruption or denial of service; altered or destroyed input, processing, storage, or output of information; or changes to information system hardware, firmware, or software characteristics with or without the users' knowledge, instruction, or intent. See also information operations.

incident classification
See search and rescue incident classification.

incident control point
A designated point close to an incident where crisis management forces will rendezvous and establish control capability before initiating a tactical reaction. Also called ICP. See also antiterrorism.

Brief clashes or other military disturbances generally of a transitory nature and not involving protracted hostilities.

inclination angle
See pitch angle.

Two or more units proceeding together under the command of a designated senior.

incremental costs
Costs which are additional costs to the Service appropriations that would not have been incurred absent support of the contingency operation. See also financial management.

indefinite call sign
A call sign which does not represent a specific facility, command, authority, activity, or unit, but which may represent any one or any group of these. See also call sign.

indefinite delivery type contract
A type of contract used for procurements where the exact time of delivery is not known at time of contracting

A merchant ship under naval control sailed singly and unescorted by a warship. See also military independent.

independent ejection system
See ejection systems.

independent mine
A mine which is not controlled by the user after laying. See also mine.

independent review
In computer modeling and simulation, a review performed by competent, objective reviewers who are independent of the model developer. Independent review includes either (a) a detailed verification and/or validation of the model or simulation; or (b) an examination of the verification and/or validation performed by the model or simulation developer. See also configuration management; validation; verification.

indicated airspeed
See airspeed.

indications and warning
Those intelligence activities intended to detect and report time-sensitive intelligence information on foreign developments that could involve a threat to the United States or allied and/or coalition military, political, or economic interests or to US citizens abroad. It includes forewarning of enemy actions or intentions; the imminence of hostilities; insurgency; nuclear/nonnuclear attack on the United States, its overseas forces, or allied and/or coalition nations; hostile reactions to US reconnaissance activities; terrorists' attacks; and other similar events. Also called I&W. See also information; intelligence.

indications (intelligence)
Information in various degrees of evaluation, all of which bear on the intention of a potential enemy to adopt or reject a course of action.

In intelligence usage, an item of information which reflects the intention or capability of a potential enemy to adopt or reject a course of action.

indirect fire
Fire delivered on a target that is not itself used as a point of aim for the weapons or the director.

indirect laying
Aiming a gun either by sighting at a fixed object, called the aiming point, instead of the target or by using a means of pointing other than a sight, such as a gun director, when the target cannot be seen from the gun position.

individual equipment
Referring to method of use: signifies personal clothing and equipment, for the personal use of the individual. See also equipment.

individual equipment
Referring to method of use: signifies personal clothing and equipment, for the personal use of the individual. See also equipment.

individual mobilization augmentee detachment
An administrative unit organized to train and manage individual mobilization augmentees.

individual protection
Actions taken by individuals to survive and continue the mission under nuclear, biological, and chemical conditions. See also protection.

individual protective equipment
In nuclear, biological, and chemical warfare, the personal clothing and equipment required to protect an individual from biological and chemical hazards and some nuclear effects.

Individual Ready Reserve
A manpower pool consisting of individuals who have had some training, who have served previously in the Active Component or in the Selected Reserve, and have some period of their military service obligation remaining. Members may voluntarily participate in training for retirement points and promotion with or without pay. Also called IRR. See also Selected Reserve.

individual reserves
The supplies carried on a soldier, animal, or vehicle for individual use in an emergency. See also reserve supplies.

individual self-defense
The individual's inherent right of self-defense is an element of unit self-defense. It is critical that individuals are aware of and train to the principle that they have the authority to use all available means and to take all appropriate action to defend themselves and other US personnel in their vicinity. In the implementation of these standing and other rules of engagement (ROE), commanders have the obligation to ensure that the individuals within that commander's unit understand when and how they may use force in self-defense. While individuals assigned to a unit respond to a hostile act or hostile intent in the exercise of self-defense, their use of force must remain consistent with lawful orders of their superiors, the rules contained in joint doctrine, and other applicable ROE promulgated for the mission or area of responsibility.

individual sponsored dependent
A dependent not entitled to travel to the overseas command at Government expense or who enters the command without endorsement of the appropriate overseas commander.

induced environment
Any manmade or equipment-made environment that directly or indirectly affects the performance of man or materiel.

induced radiation
Radiation produced as a result of exposure to radioactive materials, particularly the capture of neutrons. See also contamination; initial radiation; residual radiation; residual radioactivity.

induction circuit
In naval mine warfare, a circuit actuated by the rate of change in a magnetic field due to the movement of the ship or the changing current in the sweep.

industrial chemicals
Chemicals developed or manufactured for use in industrial operations or research by industry, government, or academia. These chemicals are not primarily manufactured for the specific purpose of producing human casualties or rendering equipment, facilities, or areas dangerous for human use. Hydrogen cyanide, cyanogen chloride, phosgene, and chloropicrin are industrial chemicals that also can be military chemical agents. See also chemical warfare.

industrial mobilization
The transformation of industry from its peacetime activity to the industrial program necessary to support the national military objectives. It includes the mobilization of materials, labor, capital, production facilities, and contributory items and services essential to the industrial program. See also mobilization.

industrial preparedness
The state of preparedness of industry to produce essential materiel to support the national military objectives.

industrial preparedness program
Plans, actions, or measures for the transformation of the industrial base, both government-owned and civilian-owned, from its peacetime activity to the emergency program necessary to support the national military objectives. It includes industrial preparedness measures such as modernization, expansion, and preservation of the production facilities and contributory items and services for planning with industry. Also called IPP.

industrial property
As distinguished from military property, any contractor-acquired or government-furnished property, including materials, special tooling, and industrial facilities, furnished or acquired in the performance of a contract or subcontract.

industrial readiness
See industrial preparedness.

inert filling
A prepared non-explosive filling of the same weight as the explosive filling.

inertial guidance
A guidance system designed to project a missile over a predetermined path, wherein the path of the missile is adjusted after launching by devices wholly within the missile and independent of outside information. The system measures and converts accelerations experienced to distance traveled in a certain direction.

inertial navigation system
A self-contained navigation system using inertial detectors, which automatically provides vehicle position, heading, and velocity. Also called INS.

inert mine
A mine or replica of a mine incapable of producing an explosion.

in extremis
A situation of such exceptional urgency that immediate action must be taken to minimize imminent loss of life or catastrophic degradation of the political or military situation.

1. The movement through or into an area or territory occupied by either friendly or enemy troops or organizations. The movement is made, either by small groups or by individuals, at extended or irregular intervals. When used in connection with the enemy, it infers that contact is avoided. 2. In intelligence usage, placing an agent or other person in a target area in hostile territory. Usually involves crossing a frontier or other guarded line. Methods of infiltration are: black (clandestine); grey (through legal crossing point but under false documentation); and white (legal).

inflammable cargo
Cargo such as drummed gasoline and oils.

inflight phase
The flight of a missile or space vehicle from launch to detonation or impact.

inflight report
The transmission from the airborne system of information obtained both at the target and en route.

influence field
The distribution in space of the influence of a ship or minesweeping equipment.

influence mine
A mine actuated by the effect of a target on some physical condition in the vicinity of the mine or on radiations emanating from the mine. See also mine.

influence release sinker
A sinker which holds a moored or rising mine at the sea-bed and releases it when actuated by a suitable ship influence.

influence sweep
A sweep designed to produce an influence similar to that produced by a ship and thus actuate mines.

1. Facts, data, or instructions in any medium or form. 2. The meaning that a human assigns to data by means of the known conventions used in their representation.

information assurance
Information operations that protect and defend information and information systems by ensuring their availability, integrity, authentication, confidentiality, and nonrepudiation. This includes providing for restoration of information systems by incorporating protection, detection, and reaction capabilities. Also called IA. See also information; information operations; information system.

information-based processes
Processes that collect, analyze, and disseminate information using any medium or form. These processes may be stand-alone processes or sub-processes that, taken together, comprise a larger system or systems of processes. See also information system.

information box
A space on an annotated overlay, mosaic, map, etc., which is used for identification, reference, and scale information.

information environment
The aggregate of individuals, organizations, or systems that collect, process, or disseminate information; also included is the information itself. See also information system.

information operations
Actions taken to affect adversary information and information systems while defending one's own information and information systems. Also called IO. See also defensive information operations; information; offensive information operations; operation.

information report
Report used to forward raw information collected to fulfill intelligence requirements.

information requirements
Those items of information regarding the adversary and the environment that need to be collected and processed in order to meet the intelligence requirements of a commander. See also priority intelligence requirements.

information resources
Information and related resources, such as personnel, equipment, and information technology. See also information.

information security
The protection of information and information systems against unauthorized access or modification of information, whether in storage, processing, or transit, and against denial of service to authorized users. Information security includes those measures necessary to detect, document, and counter such threats. Information security is composed of computer security and communications security. Also called INFOSEC. See also communications security; computer security; information security; information system.

information superiority
That degree of dominance in the information domain which permits the conduct of operations without effective opposition. See also information operations.

information system
The entire infrastructure, organization, personnel, and components that collect, process, store, transmit, display, disseminate, and act on information. See also information; information warfare.

information warfare
Information operations conducted during time of crisis or conflict to achieve or promote specific objectives over a specific adversary or adversaries. Also called IW. See also crisis; information; information operations; operation.

infrared film
Film carrying an emulsion especially sensitive to "near-infrared." Used to photograph through haze because of the penetrating power of infrared light and in camouflage detection to distinguish between living vegetation and dead vegetation or artificial green pigment.

infrared imagery
That imagery produced as a result of sensing electromagnetic radiations emitted or reflected from a given target surface in the infrared position of the electromagnetic spectrum (approximately 0.72 to 1,000 microns).

infrared linescan system
A passive airborne infrared recording system which scans across the ground beneath the flight path, adding successive lines to the record as the vehicle advances along the flight path.

infrared photography
Photography employing an optical system and direct image recording on film sensitive to near-infrared wavelength (infrared film). (Note: Not to be confused with "infrared imagery.")

infrared pointer
A low power laser device operating in the near infrared light spectrum that is visible with light amplifying night vision devices. Also called IR pointer.

infrared radiation
Radiation emitted or reflected in the infrared portion of the electromagnetic spectrum.

All building and permanent installations necessary for the support, redeployment, and military forces operations (e.g. barracks, headquarters, airfields, communications, facilities, stores, port installations, and maintenance stations). See also bilateral infrastructure; common infrastructure; national infrastructure

initial active duty for training
Basic military training and technical skill training required for all accessions. For nonprior service male enlistees between the ages of 18 1/2 and 26, initial active duty for training shall be not less than 12 weeks and start insofar as practical within 270 days after enlistment. Initial active duty for training for all other enlistees and inductees shall be prescribed by the Secretary concerned and start insofar as practical within 360 days of entry into the Service, except in time of war or national emergency declared by Congress or the President when basic training shall be not less than 12 weeks or its equivalent. Reservists may not be assigned to active duty on land outside the United States or its territories and possessions until basic training has been completed.

initial approach
a. That part of an instrument approach procedure in which the aircraft has departed an initial approach fix or point and is maneuvering to enter the intermediate or final approach. It ends at the intermediate fix or point or, where no intermediate segment is established, at the final approach fix or point. b. That part of a visual approach of an aircraft immediately prior to arrival over the airfield of destination, or over the reporting point from which the final approach to the airfield is commenced.

initial approach area
An area of defined width lying between the last preceding navigational fix or dead reckoning position and either the facility to be used for making an instrument approach or a point associated with such a facility that is used for demarcating the termination of initial approach.

initial assessment
An assessment that provides a basic determination of the viability of the infiltration and exfiltration portion of a proposed special operations forces mission. Also called IA.

initial contact report
See contact report.

initial draft plan
A plan which has been drafted and coordinated by the originating headquarters, and is ready for external coordination with other military headquarters. It cannot be directly implemented by the issuing commander, but it may form the basis for an operation order issued by the commander in the event of an emergency. See also coordinated draft plan; draft plan; final plan; operation plan.

initial early resupply
The onward movement of ships which are already loaded with cargoes which will serve the requirements after D-day. This includes such shipping deployed from major ports/major water terminals and subsequently dispersed to secondary ports/alternate water terminals and anchorages.

initial entry into Military Service
Entry for the first time into military status (active duty or reserve) by induction, enlistment, or appointment in any Service of the Armed Forces of the United States. Appointment may be as a commissioned or warrant officer; as a cadet or midshipman at the Service academy of one of the armed forces; or as a midshipman, US Naval Reserve, for US Naval Reserve Officers' Training Corps training at a civilian institution.

initial issues
The issue of materiel not previously furnished to an individual or organization, including new inductees and newly activated organizations, and the issue of newly authorized items of materiel.

initial operational capability
The first attainment of the capability to employ effectively a weapon, item of equipment, or system of approved specific characteristics that is manned or operated by an adequately trained, equipped, and supported military unit or force. Also called IOC.

initial path sweeping
In naval mine warfare, initial sweeping to clear a path through a mined area dangerous to the following mine sweepers. See also precursor sweeping.

initial photo interpretation report
A first-phase interpretation report, subsequent to the Joint Tactical Air Reconnaissance/Surveillance Mission Report, presenting the results of the initial readout of new imagery to answer the specific requirements for which the mission was requested.

initial point
1. The first point at which a moving target is located on a plotting board. 2. A well-defined point, easily distinguishable visually and/or electronically, used as a starting point for the bomb run to the target. 3. airborne--A point close to the landing area where serials (troop carrier air formations) make final alterations in course to pass over individual drop or landing zones. 4. helicopter--An air control point in the vicinity of the landing zone from which individual flights of helicopters are directed to their prescribed landing sites. 5. Any designated place at which a column or element thereof is formed by the successive arrival of its various subdivisions, and comes under the control of the commander ordering the move. Also called IP. See also target approach point.

initial programmed interpretation report
A standardized imagery interpretation report providing information on programmed mission objectives or other vital intelligence information which can be readily identified near these objectives, and which has not been reported elsewhere. Also called IPIR.

initial provisioning
The process of determining the range and quantity of items (i.e., spares and repair parts, special tools, test equipment, and support equipment) required to support and maintain an item for an initial period of service. Its phases include the identification of items of supply, the establishment of data for catalog, technical manual, and allowance list preparation, and the preparation of instructions to assure delivery of necessary support items with related end articles.

initial radiation
The radiation, essentially neutrons and gamma rays, resulting from a nuclear burst and emitted from the fireball within one minute after burst. See also induced radiation; residual radiation.

initial reserves
In amphibious operations, those supplies that normally are unloaded immediately following the assault waves; usually the supplies for the use of the beach organization, battalion landing teams, and other elements of regimental combat teams for the purpose of initiating and sustaining combat until higher supply installations are established. See also reserve supplies.

initial response force
The first unit, usually military police, on the scene of a terrorist incident. See also antiterrorism.

initial unloading period
In amphibious operations, that part of the ship-to-shore movement in which unloading is primarily tactical in character and must be instantly responsive to landing force requirements. All elements intended to land during this period are serialized. See also general unloading period.

initiating directive
An order to a subordinate commander to conduct military operations as directed. It is issued by the unified commander, subunified commander, Service component commander, or joint force commander delegated overall responsibility for the operation.

initiation of procurement action
That point in time when the approved document requesting procurement and citing funds is forwarded to the procuring activity. See also procurement lead time.

A term comprising such conditions as fractures, wounds, sprains, strains, dislocations, concussions, and compressions. In addition, it includes conditions resulting from extremes of temperature or prolonged exposure. Acute poisonings (except those due to contaminated food) resulting from exposure to a toxic or poisonous substance are also classed as injuries. See also casualty; wounded.

inland petroleum distribution system
A multi-product system consisting of both commercially available and military standard petroleum equipment that can be assembled by military personnel and, when assembled into an integrated petroleum distribution system, provides the military with the capability required to support an operational force with bulk fuels. The inland petroleum distribution system is comprised of three primary subsystems: tactical petroleum terminal, pipeline segments, and pump stations. Engineer units install the pipeline and construct the pump stations; Quartermaster units install the theater petroleum terminal and operate the total system when it is completed. Also called IPDS.

inland search and rescue region
The inland areas of the continental United States, except waters under the jurisdiction of the United States. See also search and rescue region.

inner transport area
In amphibious operations, an area as close to the landing beach as depth of water, navigational hazards, boat traffic, and enemy action permit, to which transports may move to expedite unloading. See also outer transport area; transport area.

innocent passage
The right of all ships to engage in continuous and expeditious surface passage through the territorial sea and archipelagic waters of foreign coastal states in a manner not prejudicial to its peace, good order, or security. Passage includes stopping and anchoring, but only if incidental to ordinary navigation or necessary by force majeure or distress, or for the purpose of rendering assistance to persons, ships, or aircraft in danger or distress.

in-place force
1. A North Atlantic Treaty Organization (NATO)-assigned force that, in peacetime, is principally stationed in the designated combat zone of the NATO command to which it is committed. 2. Force within a combatant commander's area of responsibility and under the combatant commander's combatant command (command authority).

inshore patrol
A naval defense patrol operating generally within a naval defense coastal area and comprising all elements of harbor defenses, the coastal lookout system, patrol craft supporting bases, aircraft, and Coast Guard stations.

In arms control, physical process of determining compliance with arms control measures.

A grouping of facilities, located in the same vicinity, which support particular functions. Installations may be elements of a base. See also base; base complex.

installation commander
The individual responsible for all operations performed by an installation. See also antiterrorism; base commander; installation.

installation complex
In the Air Force, a combination of land and facilities comprised of a main installation and its noncontiguous properties (auxiliary air fields, annexes, and missile fields) that provide direct support to or are supported by that installation. Installation complexes may comprise two or more properties, e.g., a major installation, a minor installation, or a support site, each with its associated annex(es) or support property(ies). See also minor installation.

instructional mine
An inert mine used for instruction and normally sectionalized for this purpose. See also inert mine.

instrument approach procedure
A series of predetermined maneuvers for the orderly transfer of an aircraft under instrument flight conditions from the beginning of the initial approach to a landing or to a point from which a landing may be made visually or the missed approach procedure is initiated.

instrument flight
Flight in which the path and attitude of the aircraft are controlled solely by reference to instruments.

instrument landing system
A system of radio navigation intended to assist aircraft in landing which provides lateral and vertical guidance, which may include indications of distance from the optimum point of landing. Also called ILS.

instrument meteorological conditions
Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling; less than minimums specified for visual meteorological conditions. Also called IMC. See also visual meteorological conditions.

in support
An expression used to denote the task of providing artillery supporting fire to a formation or unit. Liaison and observation are not normally provided. See also at priority call; direct support.

in support of
Assisting or protecting another formation, unit, or organization while remaining under original control.

An organized movement aimed at the overthrow of a constituted government through use of subversion and armed conflict.

Member of a political party who rebels against established leadership. See also antiterrorism; counterinsurgency; insurgency.

Integrated Consumable Item Support
A decision support system that takes time-phased force and deployment data (i.e., Department of Defense deployment plans) and calculates the ability of the Defense Logistics Agency, the warehousing unit of the Department of Defense, to support those plans. Integrated Consumable Item Support can calculate for the planned deployment supply/demand curves for over two million individual items stocked by the Defense Logistics Agency in support of deployment. Integrated Consumable Item Support allows planners to identify critical end items and anticipated shortfalls in the Defense Logistics Agency inventories. Integrated Consumable Item Support provides materiel readiness information for Defense Logistics Agency managed items to Defense Logistics Agency management, to all Services, and to the Joint Staff, to be used as a piece of the larger wartime logistic picture, which ultimately is used to assess total readiness and sustainability for deliberately planned contingencies. The goals and objectives of Integrated Consumable Item Support are to know the "war stoppers," know the weapons systems affected, and know when the Defense Logistics Agency will run out of stock. Also called ICIS.

integrated fire control system
A system that performs the functions of target acquisition, tracking, data computation, and engagement control, primarily using electronic means and assisted by electromechanical devices.

integrated logistics support
A composite of all the support considerations necessary to assure the effective and economical support of a system for its life cycle. It is an integral part of all other aspects of system acquisition and operation. Also called ILS.

integrated materiel management
The exercise of total Department of Defense-level management responsibility for a federal supply group or class, commodity, or item for a single agency. It normally includes computation of requirements, funding, budgeting, storing, issuing, cataloging, standardizing, and procuring functions. Also called IMM. See also materiel; materiel management.

integrated planning
In amphibious operations, the planning accomplished by commanders and staffs of corresponding echelons from parallel chains of command within the amphibious task force. See also amphibious operation; amphibious task force.

integrated priority list
A list of a combatant commander's highest priority requirements, prioritized across Service and functional lines, defining shortfalls in key programs that, in the judgment of the combatant commander, adversely affect the capability of the combatant commander's forces to accomplish their assigned mission. The integrated priority list provides the combatant commander's recommendations for programming funds in the planning, programming, and budgeting system process. Also called IPL.

integrated staff
A staff in which one officer only is appointed to each post on the establishment of the headquarters, irrespective of nationality and Service. See also multinational staff; joint staff; parallel staff; staff.

integrated tactical warning
See tactical warning.

integrated warfare
The conduct of military operations in any combat environment wherein opposing forces employ non-conventional weapons in combination with conventional weapons.

1. In force protection, the synchronized transfer of units into an operational commander's force prior to mission execution. 2. The arrangement of military forces and their actions to create a force that operates by engaging as a whole. 3. In photography, a process by which the average radar picture seen on several scans of the time base may be obtained on a print, or the process by which several photographic images are combined into a single image. See also force protection.

1. The product resulting from the collection, processing, integration, analysis, evaluation, and interpretation of available information concerning foreign countries or areas. 2. Information and knowledge about an adversary obtained through observation, investigation, analysis, or understanding. See also acoustic intelligence; all-source intelligence; basic intelligence; civil defense intelligence; combat intelligence; communications intelligence; critical intelligence; current intelligence; departmental intelligence; domestic intelligence; electronic intelligence; electro-optical intelligence; foreign intelligence; foreign instrumentation signals intelligence; general military intelligence; human resources intelligence; imagery intelligence; joint intelligence; laser intelligence; measurement and signature intelligence; medical intelligence; merchant intelligence; military intelligence; national intelligence; nuclear intelligence; open-source intelligence; operational intelligence; photographic intelligence; political intelligence; radar intelligence; radiation intelligence; scientific and technical intelligence; security intelligence; strategic intelligence; tactical intelligence; target intelligence; technical intelligence; technical operational intelligence; terrain intelligence; unintentional radiation intelligence

intelligence annex
A supporting document of an operation plan or order that provides detailed information on the enemy situation, assignment of intelligence tasks, and intelligence administrative procedures.

intelligence collection plan
A plan for gathering information from all available sources to meet an intelligence requirement. Specifically, a logical plan for transforming the essential elements of information into orders or requests to sources within a required time limit. See also intelligence process.

intelligence contingency funds
Appropriated funds to be used for intelligence activities when the use of other funds is not applicable or would either jeopardize or impede the mission of the intelligence unit.

intelligence database
The sum of holdings of intelligence data and finished intelligence products at a given organization.

intelligence data handling systems
Information systems that process and manipulate raw information and intelligence data as required. They are characterized by the application of general purpose computers, peripheral equipment, and automated storage and retrieval equipment for documents and photographs. While automation is a distinguishing characteristic of intelligence data handling systems, individual system components may be either automated or manually operated. Also called IDHS.

intelligence discipline
A well defined area of intelligence collection, processing, exploitation, and reporting using a specific category of technical or human resources. There are seven major disciplines: human intelligence, imagery intelligence, measurement and signature intelligence, signals intelligence, open-source intelligence, technical intelligence, and counterintelligence. See also counterintelligence; human intelligence; imagery intelligence; intelligence; measurement and signature intelligence; open-source intelligence; signals intelligence; technical intelligence.

intelligence estimate
The appraisal, expressed in writing or orally, of available intelligence relating to a specific situation or condition with a view to determining the courses of action open to the enemy or potential enemy and the order of probability of their adoption.

intelligence federation
A formal agreement in which a combatant command joint intelligence center receives preplanned intelligence support from other joint intelligence centers, Service intelligence organizations, Reserve organizations, and national agencies during crisis or contingency operations. See also joint intelligence center.

intelligence gathering
Collection of intelligence on other units or forces by own units or forces.

intelligence journal
A chronological log of intelligence activities covering a stated period, usually 24 hours. It is an index of reports and messages that have been received and transmitted, important events that have occurred, and actions taken. The journal is a permanent and official record.

intelligence operations
The variety of intelligence and counterintelligence tasks that are carried out by various intelligence organizations and activities within the intelligence process. Intelligence operations include planning and direction, collection, processing and exploitation, analysis and production, dissemination and integration, and evaluation and feedback. See also analysis and production; collection; dissemination and integration; evaluation and feedback; planning and direction; processing and exploitation.

intelligence preparation of the battlespace
An analytical methodology employed to reduce uncertainties concerning the enemy, environment, and terrain for all types of operations. Intelligence preparation of the battlespace builds an extensive database for each potential area in which a unit may be required to operate. The database is then analyzed in detail to determine the impact of the enemy, environment, and terrain on operations and presents it in graphic form. Intelligence preparation of the battlespace is a continuing process. Also called IPB.

intelligence process
The process by which information is converted into intelligence and made available to users. The process consists of six interrelated intelligence operations: planning and direction, collection, processing and exploitation, analysis and production, dissemination and integration, and evaluation and feedback. See also analysis and production; collection; dissemination and integration; evaluation and feedback; intelligence; planning and direction; processing and exploitation.

intelligence-related activities
Those activities outside the consolidated defense intelligence program that: respond to operational commanders' tasking for time-sensitive information on foreign entities; respond to national intelligence community tasking of systems whose primary mission is support to operating forces; train personnel for intelligence duties; provide an intelligence reserve; or are devoted to research and development of intelligence or related capabilities. (Specifically excluded are programs that are so closely integrated with a weapon system that their primary function is to provide immediate-use targeting data.)

intelligence report
A specific report of information, usually on a single item, made at any level of command in tactical operations and disseminated as rapidly as possible in keeping with the timeliness of the information. Also called INTREP.

intelligence reporting
The preparation and conveyance of information by any means. More commonly, the term is restricted to reports as they are prepared by the collector and as they are transmitted by the collector to the latter's headquarters and by this component of the intelligence structure to one or more intelligence-producing components. Thus, even in this limited sense, reporting embraces both collection and dissemination. The term is applied to normal and specialist intelligence reports. See also normal intelligence reports; specialist intelligence report.

intelligence requirement
1. Any subject, general or specific, upon which there is a need for the collection of information, or the production of intelligence. 2. A requirement for intelligence to fill a gap in the command's knowledge or understanding of the battlespace or threat forces. See also battlespace; intelligence; priority intelligence requirements.

intelligence source
The means or system that can be used to observe and record information relating to the condition, situation, or activities of a targeted location, organization, or individual. An intelligence source can be people, documents, equipment, or technical sensors. See also intelligence; source.

intelligence subject code
A system of subject and area references to index the information contained in intelligence reports as required by a general intelligence document reference service.

intelligence summary
A specific report providing a summary of items of intelligence at frequent intervals. Also called INTSUM. See also intelligence.

intelligence, surveillance, and reconnaissance
An activity that synchronizes and integrates the planning and operation of sensors, assets, and processing, exploitation, and dissemination systems in direct support of current and future operations. This is an integrated intelligence and operations function. Also called ISR. See also intelligence; intelligence, surveillance, and reconnaissance visualization; reconnaissance; surveillance.

intelligence, surveillance, and reconnaissance visualization
The capability to graphically display the current and future locations of intelligence, surveillance, and reconnaissance sensors, their projected platform tracks, vulnerability to threat capabilities and meteorological and oceanographic phenomena, fields of regard, tasked collection targets, and products to provide a basis for dynamic re-tasking and time-sensitive decision making. Also called ISR visualization. See also intelligence; intelligence, surveillance, and reconnaissance; reconnaissance; surveillance.

intelligence system
Any formal or informal system to manage data gathering, to obtain and process the data, to interpret the data, and to provide reasoned judgments to decision makers as a basis for action. The term is not limited to intelligence organizations or services but includes any system, in all its parts, that accomplishes the listed tasks.

intensity factor
A multiplying factor used in planning activities to evaluate the foreseeable intensity or the specific nature of an operation in a given area for a given period of time. It is applied to the standard day of supply in order to calculate the combat day of supply.

intensity mine circuit
A circuit whose actuation is dependent on the field strength reaching a level differing by some pre-set minimum from that experienced by the mine when no ships are in the vicinity.

intensive management
The continuous process by which the supported and supporting commanders, the Services, transportation component commands, and appropriate Defense agencies ensure that movement data in the Joint Operation Planning and Execution System time-phased force and deployment data for the initial days of deployment and/or mobilization are current to support immediate execution.

An aim or design (as distinct from capability) to execute a specified course of action.

interagency coordination
Within the context of Department of Defense involvement, the coordination that occurs between elements of Department of Defense, and engaged US Government agencies, nongovernmental organizations, and regional and international organizations for the purpose of accomplishing an objective. See also international organization; nongovernmental organizations.

A manned aircraft utilized for identification and/or engagement of airborne objects.

intercept point
The point to which an airborne vehicle is vectored or guided to complete an interception.

intercept receiver
A receiver designed to detect and provide visual and/or aural indication of electromagnetic emissions occurring within the particular portion of the electromagnetic spectrum to which it is tuned.

inter-chart relationship diagram
A diagram on a map or chart showing names and/or numbers of adjacent sheets in the same (or related) series. Also called index to adjoining sheets. See also map index.

The linking together of interoperable systems.

intercount dormant period
In naval mine warfare, the period after the actuation of a ship counter before it is ready to receive another actuation.

interdepartmental intelligence
Integrated departmental intelligence that is required by departments and agencies of the United States Government for the execution of their missions but which transcends the exclusive competence of a single department or agency to produce.

An action to divert, disrupt, delay, or destroy the enemy's surface military potential before it can be used effectively against friendly forces. See also air interdiction.

A boundary or point common to two or more similar or dissimilar command and control systems, sub-systems, or other entities against which or at which necessary information flow takes place.

interim financing
Advance payments, partial payments, loans, discounts, advances, and commitments in connection therewith; guarantees of loans, discounts, advances, and commitments in connection therewith; and any other type of financing necessary for both performance and termination of contracts.

interim overhaul
An availability for the accomplishment of necessary repairs and urgent alterations at a naval shipyard or other shore-based repair activity, normally scheduled halfway through the established regular overhaul cycle.

inter-look dormant period
In mine warfare, the time interval after each look in a multi-look mine, during which the firing mechanism will not register.

intermediate approach
That part of an instrument approach procedure in which aircraft configuration, speed, and positioning adjustments are made. It blends the initial approach segment into the final approach segment. It begins at the intermediate fix or point and ends at the final approach fix or point.

Intermediate Force Planning Level
The force level established during Planning Force development to depict the buildup from the Current Force to the Planning Force. The Intermediate Force Planning Level is insufficient to carry out strategy with a reasonable assurance of success and consequently cannot be referred to as the Planning Force. See also current force; force; Programmed Forces.

intermediate maintenance (field)
Maintenance that is the responsibility of and performed by designated maintenance activities for direct support of using organizations. Its phases normally consist of: a. calibration, repair, or replacement of damaged or unserviceable parts, components, or assemblies; b. the emergency manufacture of nonavailable parts; and c. providing technical assistance to using organizations.

intermediate marker (land mine warfare)
A marker, natural, artificial or specially installed, which is used as a point of reference between the landmark and the minefield.

intermediate objective
In land warfare, an area or feature between the line of departure and an objective which must be seized and/or held.

intermediate-range bomber aircraft
A bomber designed for a tactical operating radius of between 1,000 to 2,500 nautical miles at design gross weight and design bomb load.

intermediate staging base
A temporary location used to stage forces prior to inserting the forces into the host nation. Also called ISB. See also base; staging base.

intermittent arming device
A device included in a mine so that it will be armed only at set times.

intermittent illumination
A type of fire in which illuminating projectiles are fired at irregular intervals.

Type of international freight system that permits transshipping among sea, highway, rail, and air modes of transportation through use of American National Standards Institute and International Organization for Standardization containers, line-haul assets, and handling equipment. See also American National Standards Institute; International Organization for Standardization.

intermodal support equipment
Fixed and deployable assets required to assist container operations throughout the intermodal container system. Included are straddle cranes, chassis, rough terrain container handlers, container cranes and spreader bars. See also intermodal.

intermodal systems
Specialized transportation facilities, assets, and handling procedures designed to create a seamless transportation system by combining multimodal operations and facilities during the shipment of cargo. See also intermodal; transportation system.

internal audience
US military members and civilian employees and their immediate families. One of the audiences comprising the concept of "publics." See also external audience.

internal defense and development
The full range of measures taken by a nation to promote its growth and to protect itself from subversion, lawlessness, and insurgency. It focuses on building viable institutions (political, economic, social, and military) that respond to the needs of society. Also called IDAD. See also foreign internal defense.

internal information
See command information.

internally displaced person
Any person who has left their residence by reason of real or imagined danger but has not left the territory of their own country.

internal radiation
Nuclear radiation (alpha and beta particles and gamma radiation) resulting from radioactive substances in the body

internal security
The state of law and order prevailing within a nation.

internal waters
All waters, other than lawfully claimed archipelagic waters, landward of the baseline from which the territorial sea is measured. Archipelagic states may also delimit internal waters consistent with the 1982 convention on the law of the sea. All states have complete sovereignty over their internal waters.

international arms control organization
An appropriately constituted organization established to supervise and verify the implementation of arms control measures.

International Atomic Time
The time reference scale established by the Bureau International des Poids et Mesures on the basis of atomic clock readings from various laboratories around the world. Also called TAI.

international call sign
A call sign assigned in accordance with the provisions of the International Telecommunications Union to identify a radio station. The nationality of the radio station is identified by the first or the first two characters. (When used in visual signaling, international call signs are referred to as "signal letters.") See also call sign.

International Convention for Safe Containers
A convention held in Geneva, Switzerland, on 2 Dec 1972, which resulted in setting standard safety requirements for containers moving in international transport. These requirements were ratified by the United States on 3 January 1978. Also called CSC.

international cooperative logistics
Cooperation and mutual support in the field of logistics through the coordination of policies, plans, procedures, development activities, and the common supply and exchange of goods and services arranged on the basis of bilateral and multilateral agreements with appropriate cost reimbursement provisions

international date line
The line coinciding approximately with the anti-meridian of Greenwich, modified to avoid certain habitable land. In crossing this line there is a date change of one day. Also called date line.

international identification code
In railway terminology, a code which identifies a military train from point of origin to final destination. The code consists of a series of figures, letters, or symbols indicating the priority, country of origin, day of departure, national identification code number, and country of destination of the train.

international loading gauge (GIC)
The loading gauge upon which international railway agreements are based. A load whose dimensions fall within the limits of this gauge may move without restriction on most of the railways of Continental Western Europe. GIC is an abbreviation for "gabarit international de chargement," formerly called PPI.

international logistic support
The provision of military logistic support by one participating nation to one or more participating nations, either with or without reimbursement. See also interdepartmental or agency support; inter-Service support; support.

international logistics
The negotiating, planning, and implementation of supporting logistic arrangements between nations, their forces, and agencies. It includes furnishing logistic support (major end items, materiel, and/or services) to, or receiving logistic support from, one or more friendly foreign governments, international organizations, or military forces, with or without reimbursement. It also includes planning and actions related to the intermeshing of a significant element, activity, or component of the military logistic systems or procedures of the United States with those of one or more foreign governments, international organizations, or military forces on a temporary or permanent basis. It includes planning and actions related to the utilization of United States logistic policies, systems, and/or procedures to meet requirements of one or more foreign governments, international organizations, or forces.

international military education and training
Formal or informal instruction provided to foreign military students, units, and forces on a nonreimbursable (grant) basis by offices or employees of the United States, contract technicians, and contractors. Instruction may include correspondence courses; technical, educational, or informational publications; and media of all kinds. Also called IMET. See also United States Military Service funded foreign training.

international narcotics activities
Those activities outside the United States that produce, transfer, or sell narcotics or other substances controlled in accordance with Title 21, "Food and Drugs" - United States Code, sections 811 and 812.

international organization
An organization with global mandates, generally funded bycontributions from national governments. Examples include theInternational Committee of the Red Cross, the InternationalOrganization for Migration, and United Nations agencies. Also called IO. See also nongovernmental organizations.

International Organization for Standardization
A worldwide federation of national standards bodies from some 100 countries, one from each country. The International Organization for Standardization (ISO) is a non-governmental organization, established to promote the development of standardization and related activities in the world with a view to facilitating the international exchange of goods and services, and to developing cooperation in the spheres of intellectual, scientific, technological, and economic activity. ISO's work results in international agreements which are published as international standards. Also called ISO.

See missing.

interocular distance
The distance between the centers of rotation of the eyeballs of an individual or between the oculars of optical instruments.

1. The ability of systems, units, or forces to provide services to and accept services from other systems, units, or forces and to use the services so exchanged to enable them to operate effectively together. 2. (DOD only) The condition achieved among communications-electronics systems or items of communications-electronics equipment when information or services can be exchanged directly and satisfactorily between them and/or their users. The degree of interoperability should be defined when referring to specific cases.

The use of interoperable systems, units, or forces.

Suitability of imagery for interpretation with respect to answering adequately requirements on a given type of target in terms of quality and scale. a. poor--Imagery is unsuitable for interpretation to answer adequately requirements on a given type of target. b. fair--Imagery is suitable for interpretation to answer requirements on a given type of target but with only average detail. c. good--Imagery is suitable for interpretation to answer requirements on a given type of target in considerable detail. d. excellent--Imagery is suitable for interpretation to answer requirements on a given type of target in complete detail.

A part of the analysis and production phase in the intelligence process in which the significance of information is judged in relation to the current body of knowledge. See also intelligence process.

interrogation (intelligence)
Systematic effort to procure information by direct questioning of a person under the control of the questioner.

inter-Service education
Military education provided by one Service to members of another Service. See also military education; military training.

inter-Service, intragovernmental agreements
Formal long-term or operational specific support agreements between Services, Department of Defense (DOD), and/or non-DOD agencies governed by DOD Instruction 4000.19, Interservice and Intragovernmental Support. These agreements, normally developed at the Service Secretariat and governmental agency director level, document funding and reimbursement procedures as well as standards of support between the supplying and receiving Service or agencies. Inter-Service, intragovernmental agreements, while binding Service level agreements, do not connote DOD-level executive agent responsibilities. See also inter-Service support.

inter-Service support
Action by one Military Service or element thereof to provide logistic and/or administrative support to another Military Service or element thereof. Such action can be recurring or nonrecurring in character on an installation, area, or worldwide basis. See also interdepartmental or agency support; international logistic support; support.

inter-Service training
Military training provided by one Service to members of another Service. See also military education; military training.

Between theaters or between the continental United States and theaters. See also intertheater traffic.

intertheater airlift
The common-user airlift linking theaters to the continental United States and to other theaters as well as theairlift within the continental United States. The majority of these air mobility assets is assigned to the Commander, United States Transportation Command. Because of the intertheater ranges usually involved, intertheater airlift is normally conducted by the heavy, longer range, intercontinental airlift assets but may be augmented with shorter range aircraft when required. Formerly referred to as "strategic airlift." See also intratheater airlift.

intertheater evacuation
Evacuation of stabilized patients between the originating theater and points outside the theater, to include the continental United States and other theaters. En route care is provided by medical attendants qualified for the specific mode of transportation. See also en route care; evacuation; intratheater evacuation; patient.

intertheater traffic
Traffic between theaters exclusive of that between the continental United States and theaters.

1. The space between adjacent groups of ships or boats measured in any direction between the corresponding ships or boats in each group. 2. The space between adjacent individuals, ground vehicles, or units in a formation that are placed side by side, measured abreast. 3. The space between adjacent aircraft measured from front to rear in units of time or distance. 4. The time lapse between photographic exposures. 5. At battery right or left, an interval ordered in seconds is the time between one gun firing and the next gun firing. Five seconds is the standard interval. 6. At rounds of fire for effect the interval is the time in seconds between successive rounds from each gun.

Action taken to divert a unit or force from its track, flight path, or mission.

interview (intelligence)
To gather information from a person who is aware that information is being given although there is ignorance of the true connection and purposes of the interviewer. Generally overt unless the collector is other than purported to be

intracoastal sealift
Shipping used primarily for the carriage of personnel and/or cargo along a coast or into river ports to support operations within a given area.

intransit aeromedical evacuation facility
A medical facility, on or in the vicinity of an air base, that provides limited medical care for intransit patients awaiting air transportation. This type of medical facility is provided to obtain effective utilization of transport airlift within operating schedules. It includes "remain overnight" facilities, intransit facilities at aerial ports of embarkation and debarkation, and casualty staging facilities in an overseas combat area. See also aeromedical evacuation unit.

intransit inventory
That materiel in the military distribution system that is in the process of movement from point of receipt from procurement and production (either contractor's plant or first destination, depending upon point of delivery) and between points of storage and distribution.

intransit stock
See intransit inventory.

in-transit visibility
The ability to track the identity, status, and location of Department of Defense units, and non-unit cargo (excluding bulk petroleum, oil, and lubricants) and passengers; patients; and personal property from origin to consignee or destination across the range of military operations. Also called ITV. See also Global Transportation Network; total asset visibility.

Within a theater. See also intratheater traffic.

intratheater airlift
Airlift conducted within a theater. Assets assigned to a geographic combatant commander or attached to a subordinate joint force commander normally conduct intratheater airlift operations.Intratheater airlift provides air movement and delivery of personnel and equipment directly into objective areas through airlanding, airdrop, extraction, or other delivery techniques as well as the air logistic support of all theater forces, including those engaged in combat operations, to meet specific theater objectives and requirements. During large-scale operations, US Transportation Command assets may be tasked to augment intratheater airlift operations, and may be temporarily attached to a joint force commander. Formerly referred to as theaterairlift. See also intertheater airlift.

intratheater evacuation
Evacuation of stabilized patients between points within the theater. En route care is provided by medical attendants qualified for the specific mode of transportation. See also en route care; evacuation; intertheater evacuation; patient.

intratheater traffic
Traffic within a theater.

An individual, unit, or weapon system, in or near an operational or exercise area, which presents the threat of intelligence gathering or disruptive activity.

Movement of a unit or force within another nation's specified operational area outside of territorial seas and territorial airspace for surveillance or intelligence gathering in time of peace or tension.

invasion currency
See military currency.

inventory control
That phase of military logistics which includes managing, cataloging, requirements determinations, procurement, distribution, overhaul, and disposal of materiel. Also called inventory management; materiel control; materiel management; supply management.

inventory control point
An organizational unit or activity within a Department of Defense supply system that is assigned the primary responsibility for the materiel management of a group of items either for a particular Service or for the Defense Department as a whole. Materiel inventory management includes cataloging direction, requirements computation, procurement direction, distribution management, disposal direction and, generally, rebuild direction. Also called ICP.

inventory management
See inventory control.

inventory managers
See inventory control point.

investment costs
Those program costs required beyond the development phase to introduce into operational use a new capability; to procure initial, additional, or replacement equipment for operational forces; or to provide for major modifications of an existing capability. They exclude research, development, test and evaluation, military personnel, and operation and maintenance appropriation costs.

That part of the atmosphere, extending from about 70 to 500 kilometers, in which ions and free electrons exist in sufficient quantities to reflect electromagnetic waves.

IR pointer
See infrared pointer.

irregular forces
Armed individuals or groups who are not members of the regular armed forces, police, or other internal security forces.

irregular outer edge
In land mine warfare, short mine rows or strips laid in an irregular manner in front of a minefield facing the enemy to deceive the enemy as to the type or extent of the minefield. Generally, the irregular outer edge will only be used in minefields with buried mines.

isodose rate line
See dose rate contour line.

isolated personnel
Military or civilian personnel separated from their unit or organization in an environment requiring them to survive, evade, or escape while awaiting rescue or recovery. See also combat search and rescue; search and rescue.

isolated personnel report
A Department of Defense Form (DD 1833) containing information designed to facilitate the identification and authentication of an evader by a recovery force. Also called ISOPREP. See also authentication; evader; recovery force.

issue control group
A detachment that operates the staging area, consisting of holding areas and loading areas, in an operation. See also staging area

issue priority designator
See priority designator.

item manager
An individual within the organization of an inventory control point or other such organization assigned management responsibility for one or more specific items of materiel.

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