| Acronym | Meaning |
 | PIN | Personal Identification Number |
| USSR | Union Of Soviet Socialist Republics |
| DCAA | (U.S.) Defense Contract Audit Agency |
| GCF | Greatest Common Factor |
| TACC | Tactical Air Control Centre - (USAF) Tanker Airlift Control Center |
| AWC | Air Warfare Centre |
| ZA | Zeptoampere |
| LRU | Line-Replaceable Unit |
| SEN | Senegal (ISO 3166 Trigram) -Small Extension Node |
| FYDP | Five-Year Defense Plan (U.S.) |
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