| Acronym | Meaning |
| SIP | Session Initiation Protocol - State Implementation Plan - System Improvement Program - Systematic Investment Plan |
| HVU | High Value Unit (military) |
| TCHD | Truck Cargo Heavy Duty |
| GY | Guyana (FIPS 10-4 Country Code; ISO 3166 Digram) |
| RO | Romanian Language (ISO 639-1 Code) |
| UNMIK | United Nations Interim Administration Mission In Kosovo |
| VVAF | Vietnam Veterans Of America Foundation |
| CR | Cree Language (ISO 639-1 Code) |
| NMD | U.S. National Missile Defense |
| LAD | Laser Aiming Device |