| Acronym | Meaning |
| PIF | Partners In Flight |
| ASD(RA) | (U.S.) Assistant Secretary Of Defense (Reserve Affairs) |
| RW | Rwanda (ISO 3166 And FIPS 10-4 Country Code Digram) |
| PWC | PieceWise Constant (describing A Mathematical Function) |
| LADW | Local Air Defence Warning |
| CAIR | Council On American-Islamic Relations |
| AFES | Automatic Fire Extinguishing System |
| OSA | Order Of St. Augustine |
| AFO | Association Of Field Ornithologists |
| TED | Technology Entertainment Design Prize |