| Acronym | Meaning |
 | AFAP | Artillery-fired Atomic Projectile |
| AADT | Average Annual Weekday Traffic |
| HCN | Historical Climatology Network |
| FRC | Federal Records Center |
| UCARF | UCAR Foundation |
| JEC | Joint-Evaluation Committee |
| CAP | Civil Air Patrol |
| NEXUS | Next-generation Upper-air Sounding System |
| ACA | American Conservation Association |
| ASR | Airport Surveillance Radar |
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