ANSIAmerican National Standards Institute - a private, non-profit organization that administers and coordinates the U.S.
Antenna AreaThe ratio of the power available at the terminals of an antenna to the incident power density of a plane wave from the direction polarized.
Anti-Ballistic Missile (ABM)The term used for Ballistic Missile Defense (BMD) weapons developed to negate the ballistic missile threat in the late 60s and early 70s.
Anti-SimulationThe process of introducing random variations to the signature characteristics of an object in order to cause misidentification of the object by the…
Antiair WarfareAction required to destroy or reduce to an acceptable level the enemy air and missile threat.
Antisatellite Weapon (ASAT)A weapon designed to destroy satellites in space. The weapon may be launched from the ground, from an aircraft, or be based in space.
ApplicationUnder the Equal Credit Opportunity Act (ECOA), an oral or written request for an extension of credit that is made in accordance with the procedures…
Apportionment(1) A determination made by the Office of Management and Budget which limits the amount of obligations or expenditures that may be incurred during a…
AppropriationThe provision of funds, through an annual appropriations act or a permanent law, for federal agencies to make payments out of the Treasury for specified…
Appropriation(s)An authorization by an act of Congress that permits Federal agencies to incur obligations and make payments from the Treasury.
Approved ProgramThe technical and operational, schedule, and quantity requirements reflected in the latest approved USD (A) ADM, or other document reflecting a more…
Architectural DesignThe process of defining a collection of hardware and software components and their interfaces to establish the framework for the development of a computer…
Architecture Integration Study (AIS)A study to determine the performance of alternative architectures and element designs that satisfy BMD System mission requirements, and to evaluate the…
Area Air Defense Commander (AADC)The person given overall responsibility for air defense within an overseas unified command, subordinate unified command, or a joint task force.
Area DefenseDefense of a broad geographical area that contains both military and civilian assets (i.e., depots, towns/cities). (USSPACECOM)
Area of InfluenceThe area covered by the drawdown curves of a given pumping well or combination of wells at a particular time.
Area of Interest (AOI)The area of influence and surrounding areas that is of concern to the commander for the objective of current and planned operations.
Area of OperationsThat portion of an area of war necessary for military operations and for the administration of such operations.
Arms Export Control Board (AECB)An interagency board, chaired by the Under Secretary of State for Security Assistance, Science, and Technology, that serves to advise the Secretary of…
Army Brigade Center (ARBC)The Army center between the ARSPOC and the ARROC with C2 responsibilities for BMD.
Army Component Command Center (ARCCC)A segment of the Command and Control Element, which replicates capabilities of the CCC (BMD) segment and provides administrative and logistics support to…
Army Materiel Command (AMC)Performs the assigned materiel functions of the Department of the Army, including research and development; product improvement; human factors…