| Abbreviation | Definition |
|---|---|
| 4RD | Fourth Round - projectile. see also ~ “ second double tap “military term for confirmed kill |
| AAF | Algerian Air Force |
| AAFB | Arnold Air Force Base |
| AAFC | American Air Force Course |
| AAFES | Army Air Force Exchange Service |
| AAFES | Army and Air Force Exchange Services |
| AAFES | Army and Air Force Exchange System |
| AAWACU | Air-to-Air Warfare Aircraft Control Unit |
| ABC | All Bananas Crash |
| ABRES | Advanced Ballistic Re-Entry System |
| ABU | After-Body Unit |
| ACMS | Aircraft Condition Monitoring System |
| ACOS | ACCS (Air Command and Control System) Common Operating System |
| ADAT | Allied Directorate of Air Transport |
| ADIZ | Air Defence Identification Zone |
| ADTC | Armament Development and Test Center, Eglin Air Force Base |
| AEHA | Aeromedical Evacuation and Hospitalization Model |
| AFAA | Air Force Audit Agency |
| AFAC | Air Force Armament Center, Eglin Air Force Base, Florida |
| AFAD | Air Force Acquisition Document |
