angle between defender's flight path and attacker's flight path measured from defender's six o'clock, usage: AIM-9L is an all-aspect missile

anti-aircraft artillery(more commonly known as "Triple A")

(Airborne Command, Control and Communications) an EC-130 which directs air battles from a distance

air defense artillery

Advanced Medium Range Air-to-Air Missile

the angle between the aircraft's mean chord line and the relative wind

Above Sea Level(refers to altitude)

Airborne Warning and Control System

identified enemy aircraft

the horizontal direction to or from any point, usually measured clockwise in degrees