| Acronym | Meaning |
 | MISSI | Multilevel Information System Security Initiative |
| OB | Obedience - Obligation - Obligatory - Obsolete - Obstetrics -Ocean Beach (California) - Off Break (cricket) - Old Bryanstonian - Order Of Battle - Outlet Box (electrical) -Overbought (stock Market) -Oversight Board |
| ATFU | Ate The Fuck Up - Related To FUBAR |
| AIR | Aircraft Inventory Record |
| USR | Universal System Resources (/usr |
| SOI | Signal Operating Instruction |
| TTYL | Talk To You Later (Internet Slang) |
| CID | Combat Identification -Criminal Investigation Division - Criminal Investigations Department |
| LGB | Lesbian |
| WOM | Write Only Memory (a Joke From Stan Kelly-Bootle) |
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