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Glossary of Military Acronyms
O
contour pattern
O&I
operations and intelligence
O&M
operation and maintenance
OA
objective area; operating assembly; operational area; Operations
Aerology shipboard METOC division
OADR
originating agency's determination required
OAE
operational area evaluation
OAF
Operation ALLIED FORCE
OAFME
Office of the Armed Forces Medical Examiner
OAG
operations advisory group
OAJCG
Operation Alliance joint control group
OAP
offset aimpoint
OAR
Chairman of the Joint Chiefs of Staff operation plans assessment
report
OAS
offensive air support; Organization of American States
OASD
Office of the Assistant Secretary of Defense
OASD(PA)
Office of the Assistant Secretary of Defense (Public Affairs)
OAU
Organization of African Unity
O/B
outboard
OB
operating base; order of battle
OBA
oxygen breathing apparatus
OBFS
offshore bulk fuel system
OBST
obstacle
OCA
offensive counterair; operational control authority
OCC
Operations Computer Center (USCG)
OCCA
Ocean Cargo Clearance Authority
OCD
orderwire clock distributor
OCE
officer conducting the exercise
OCEANCON
control of oceanographic information
OCHA
Office for the Coordination of Humanitarian Affairs
OCJCS
Office of the Chairman of the Joint Chiefs of Staff
OCMI
officer in charge, Marine Inspection
OCO
offload control officer
OCONUS
outside the continental United States
OCOP
outline contingency operation plan
OCP
operational configuration processing
OCR
Office of Collateral Responsibility
OCU
orderwire control unit (Types I, II, and III)
OCU-1
orderwire control unit-1
OD
operational detachment; other detainee
ODA
operational detachment-Alpha
ODATE
organization date
O-Day
off-load day
ODB
operational detachment-Bravo
ODC
Office of Defense Cooperation
ODCSLOG
Office of the Deputy Chief of Staff for Logistics (Army)
ODCSOPS
Office of the Deputy Chief of Staff for Operations and Plans
(Army)
ODCSPER
Office of the Deputy Chief of Staff for Personnel (Army)
ODIN
Operational Digital Network
ODJS
Office of the Director, Joint Staff
ODR
Office of Defense representative
ODZ
outer defense zone
OEBGD
Overseas Environmental Baseline Guidance Document
OEG
operational exposure guide
OER
operational electronic intelligence (ELINT) requirements
OES
office of emergency services
OET
Office of Emergency Transportation (DOT)
OF
officer (NATO)
OFCO
offensive counterintelligence operation
OFDA
Office of Foreign Disaster Assistance
OFHIS
operational fleet hospital information system
OFOESA
Office of Field Operational and External Support Activities
OGA
other government agency
OGS
overseas ground station
OH
overhead
OI
Office of Intelligence (USCS); operating instruction
OIC
officer in charge
OICC
officer in charge of construction; operational intelligence
coordination center
OID
operation order (OPORD) identification
OIR
operational intelligence requirements; other intelligence
requirements
OCJCS-PA
Office of the Chairman of the Joint Chiefs of Staff-Public
Affairs
OJT
on-the-job training
OL
operating location
OLD
on-line tests and diagnostics
OLS
operational linescan system; optical landing system
OM
contour multiunit
OMA
Office of Military Affairs (CIA)
OMB
Office of Management and Budget
OMC
Office of Military Cooperation; optical memory card
OMF
officer master file
OMT
orthogonal mode transducer
OMT/OMTP
operational maintenance test(ing)/test plan
ONDCP
Office of National Drug Control Policy
ONI
Office of Naval Intelligence
OOB
order of battle
OOD
officer of the deck
OODA
observe, orient, decide, act
OOS
out of service
OP
observation post; operational publication (USN); ordnance
pamphlet
OP3
overt peacetime psychological operations (PSYOP) program
OPARS
Optimum Path Aircraft Routing System
OPBAT
Operation Bahamas, Turks, and Caicos
OPCEN
operations center (USCG)
OPCOM
operational command (NATO)
OPCON
operational control
OPDEC
operational deception
OPDOC
operational documentation
OPDS
offshore petroleum discharge system (Navy)
OPELINT
operational electronic intelligence
OPFOR
opposing force; opposition force
OPG
operations planning group
OPGEN
operation general matter
OPLAN
operation plan
OPLAW
operational law
OPM
Office of Personnel Management; operations per minute
OPNAVINST
Chief of Naval Operations instruction
OPORD
operation order
OPP
off-load preparation party; orderwire patch panel
OPR
office of primary responsibility
OPREP
operational report
OPS
operational project stock; operations
OPSDEPS
Service Operations Deputies
OPSEC
operations security
OPSTK
operational stock
OPSUM
operation summary
OPT
operational planning team
OPTAR
operating target
OPTASK
operation task
OPTEMPO
operating tempo
OPTINT
optical intelligence
OPZONE
operation zone
OR
operational readiness; other rank(s) (NATO)
ORBAT
order of battle
ORCON
originator controlled
ORD
Operational Requirements Document
ORDREF
order reference
ORDTYP
order type
ORG
origin (GELOC)
ORIG
origin
ORP
ocean reception point
OS
operating system
OSA
operational support airlift
OSAT
out-of-service analog test
OSC
on-scene commander; operational support command; operations
support center
OSD
Office of the Secretary of Defense
OSE
on scene endurance
OSG
operational support group
OSI
open system interconnection; operational subsystem interface
OSIA
on-site inspection activity
OSINT
open-source intelligence
OSIS
open-source information system
OSO
operational support office
OSOCC
on-site operations coordination center
OSP
operations support package
OSPG
overseas security policy group
OSRI
originating station routing indicator
OSV
ocean station vessel
OT
operational test
OT&E
operational test and evaluation
OTC
officer in tactical command; over the counter
OTG
operational target graphic
OTH
other; over the horizon
OTH-B
over-the-horizon backscatter (radar)
OTHT
over-the-horizon targeting
OTI
Office of Transition Initiatives
OTS
Officer Training School; one-time source
OUB
offshore petroleum discharge system (OPDS) utility boat
OUSD
Office of the Under Secretary of Defense
OUSD(AT&L)
Office of the Under Secretary of Defense (Acquisition,
Technology, and Logistics)
OUSD(C)
Office of the Under Secretary of Defense (Comptroller)
OUSD(P)
Office of the Under Secretary of Defense (Policy)
OUT
outsize cargo
OVE
on-vehicle equipment
OVER
oversize cargo
OW
orderwire
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