Abbreviation Definition
OTVOuter Tactical Vest
OTWOn The Water
OTWOver The Waves
OUOrganizational Unit
OUBOffshore Petroleum Discharge System (OPDS) Utility Boat
OUIOfficer under investigation
OUIOrganizational Unit Identifier
OUOOfficial Use Only
OUSDOffice 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)
OUTOperational Unit Transportable
OUTOutsize Cargo
OUTBOARDShipboard organic collection, analysis, processing, DF, and Reporting System
OVObserVation aircraft
OVOhio Volunteers
OVOperetional View
OV-1Mohawk ObserVation aircraft
OV-10Bronco ObserVation aircraft

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