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Minuteman II booster stack.
Orbiting Debris Term referring to all earth-orbiting objects except active satellites.
ORC Operational Readiness Condition.
ORCA Operational Requirements Continuity Assessment.
ORD See Operational Requirements Document.
ORDALT Ordnance Alteration.
Order of Battle The identification, strength, command structure, and disposition of the
personnel, units, and equipment of any military force.
Order Wire
Message
A communications support function for internal control of communications
elements.
Organic Assigned to and forming an essential part of a military organization. Organic
parts of a unit are those listed in its table of organization for the Army, Air Force,
and Marine Corps, and are assigned to the administrative organizations of the
operating forces for the Navy.
Ornate Impact USFK Joint TMD Warfighter Exercise.
ORNL Oak Ridge National Laboratory, TN.
ORTA Office of Research and Technology Applications.
ORU Orbital Replacement Unit.
ORWG Operational Requirements Working Group.
OS (1) Operational Suitability. (2) Operating System.
OSA Optical Society of America.
OSC Optical Signature Code.
OSCE Organization for Cooperation and Security in Europe.
OSD Office of the Secretary of Defense.
OSE Operational Support Equipment.
OSEIT Operations and Support Engineering Integration Tool.
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OSF Open Systems Foundation.
OSH Occupational Safety and Health.
OSHA Occupational Safety and Health Act.
OSI Operator System Interface.
OSIA On Site Inspection Agency, Washington, DC.
OSIM Object Simulation (NMD BMC3 term).
OSIP Operational System Integration Plan.
OSIWG Operating Systems Interface Working Group.
OSJTF Open Systems Joint Task Force.
OSM Object Sighting Message.
OSS Operations Support System (Navy C3 program).
OSTP Office of Science and Technology Policy.
OSWR Office of Science and Weapons Research.
OT Operational Test.
OTA (1) Office of Technology Assessment, Washington, DC.
(2) Operational Test Agency.
(3) Office of Technology Applications, MDA.
OTCIXS Officer in Tactical Command Information Exchange Subsystem (Navy term).
OT&E See Operational Test and Evaluation.
OTDR Optical Time-Domain Reflectometer.
OTF Object Track Profile.
OTH Over the Horizon.
OTH-B Over-The-Horizon.
OTH-T Over-The-Horizon Targeting.
OTO Operational Test Organization.
OTP Outline Test Plan.
OTS Off-the-Shelf.
OTSA Off-the-Shelf Analysis.
OTV Orbital Transfer Vehicle.
OUSD Office of the Under Secretary of Defense.
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OUSD (A) OBSOLETE. See OUSD (A&T).
OUSD (A&T) Office of the Under Secretary of Defense (Acquisition & Technology).
Outer Space
Treaty of 1967
A multilateral treaty signed and ratified by both the United States and the
(former) Soviet Union. Article IV of the Outer Space Treaty forbids basing
nuclear weapons or other weapons of mass destruction in space.
Outlays Actual expenditures. Checks issued, interest accrued on the public debt, or
other payments, net of refunds and reimbursements. Total budget outlays
consist of the sum of the outlays from appropriations and funds in the budget,
minus receipts.
Out of Band
Laser Flux
(Sensor) Laser energy directed at a sensor that is intended to damage or disrupt
the sensor and is outside the sensor’s bandwidth.
Out-Years Normally, six years beyond the year being worked in the upcoming POM/budget.
Overlay BMD
System
An advanced exoatmospheric defense system oriented toward defense of
ICBMs, consisting of missile-borne, passive infrared sensors and non-nuclear
homing interceptors.
OWG Operating Working Group.
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P&D Planning and Design (MILCON term).
P&M (1) Producibility and Manufacturing. (2) Procure and Manufacture.
P.B. President’s Budget.
P2 Pollution Prevention.
p2NRTA&A Pre-Planned Near-Real-Time Assessment and Adaptation.
P3 Pollution Prevention Program.
P3I Preplanned Product Improvement.
PA (1) Product Assurance. (2) Public Affairs.
PA&E Program Analysis and Evaluation.
PA&ID Program Analysis and Integration Directorate.
PAC (1) PATRIOT Advanced Capability. (2) Program Assessment Center. (MDA)
PAC-2 PATRIOT Advanced Capability-2
PAC-2/-3 PATRIOT Advanced Capability, Level 2/Level 3. Formerly called ERINT.
PAC-3 PATRIOT Advanced Capability-3
PAC-3 SIM PAC-3 Simulation (PATRIOT), Huntsville, AL.
PAC-4 PATRIOT Advanced Capability-4.
PACA Professional Aerospace Contractors Association.
　
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