| Acronym | Meaning |
| VI | Vietnamese Language (ISO 639-1 Code) |
| USD(P&R) | (U.S.) Under-Secretary Of Defense (Personnel & Readiness) |
| XMSF | EXtensible Modelling And Simulation Framework |
| USA | United States Of America (alsoISO 3166 Trigram) - United States Army |
| AASPEM | Advanced Air-to-air System Performance Evaluation Model |
| CRIPL | Consolidated Remain-In-Place List |
| NARAL | National Abortion Rights Action League |
| N/K/A | Now Known As |
| IACREOT | International Association Of Clerks |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |