| Acronym | Meaning |
 | SOF | Special Operations Force- Status Of Forces |
| TIR | Tigrinya Language (ISO 639-2 Code) |
| I.E. | Id Est (Latin |
| IR | Infrared - Intelligence Requirement (military) -Iran (FIPS 10-4 Country Code; ISO 3166 Digram) - Iran Air (IATA Alpha Code) See Entry For More |
| IAW | In Accordance With |
| SI | Slovenia (ISO 3166 And FIPS 10-4 Country Code Digram) -Socialist International - Sports Illustrated - Syst?me International (French |
| XCD | East Caribbean Dollar (ISO 4217 Currency Code) |
| CST | Central Standard Time (UTC-6 Hours) |
| CCD | Charge-Coupled Device |
| CSI | See Entry |
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