| Acronym | Meaning |
 | FRA | Federal Railroad Administration -France (ISO 3166 Trigram) |
| LIT | Lithuanian Language (ISO 639-2 Code) |
| SSDC | U.S. Space And Strategic Defense Command |
| RFI | Ready For Inspection - Ready For Issue - Request For Information - Radio Frequency Interference |
| UIUC | University Of Illinois At Urbana-Champaign |
| CDT | Central Daylight Saving Time (UTC-5 Hours) |
| UPS | Uninterruptible Power Supply - United Parcel Service |
| NACMA | NATO Air Command And Control System Management Agency |
| USB | Universal Serial Bus |
| AFO | Association Of Field Ornithologists |
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