| Acronym | Meaning |
| FTP | File Transfer Protocol |
| FSO | Fire Support Officer - Flotilla Staff Officer - Foreign Service Officer |
| BSOD | Blue Screen Of Death (distinct From BSD) |
| ITU | Intent-to-Use - International Telecommunication Union (International Telegraph Union 1865-1932) |
| RERC | Rehabilitation Engineering Research Center |
| ICS | In-Country Support - Intelligence And Communications Systems - Interim Contractor Support |
| KCMO | Kansas City |
| GT | Gigatesla -Gran Turismo - Grand Touring -Guatemala (FIPS 10-4 Country Code; ISO 3166 Digram) |
| LTZ | Luxembourgish Language (ISO 639-2 Code) |
| NAVSTAR | Navigation Satellite Timing And Ranging |