| Acronym | Meaning |
| DHS | U.S. Department Of Homeland Security |
| AU | Gold |
| DBS | Direct Broadcast Services (television) |
| AV | Attovolt |
| MILSATCOM | Military Satellite Communications |
| RDA | Research |
| RAP | Radio Access Point - Radiological Assistance Program (U.S. Department Of Energy) - Rear Area Protection - Recognised [Operating/Operational] Air Picture - Recurring Advance Payment - Relational Associative Processor - Reliable Acoustic Path - Rocket-Assis |
| MEMS | Microelectromechanical System |
| PG | Petagram |
| AFWA | Air Force Weather Agency - Association Of Fish And Wildlife Agencies |