| Acronym | Meaning |
 | PBYTE | Petabyte (1015bytes) |
| FATS | South African Air Force Tactical Support Command |
| ACL | Alternative Concentration Level/limit |
| AI | Action Item |
| TIME-GCM | Thermosphere-Ionosphere-Mesosphere-Electrodynamic General Circulation Model |
| FHSA | Federal Hazardous Substances Act |
| HB | Hard Black |
| ADA | Applied Decision Analysis |
| EOB | Executive Office Building |
| IQSY/EX | International Quiet Years Of The Sun Experiments |
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