| Acronym | Meaning |
 | COMECON | Council For Mutual Economic Assistance (economic Counterpart Of The Warsaw Pact |
| PITA | Pain In The Ass |
| GUM | Guam (ISO 3166 Trigram) |
| OPCON | Operational Control |
| LOA | Limit Of Advance |
| HUD | Head-Up Display - Housing And Urban Development |
| NAS | National Academy Of Sciences - National Air Space - National Audubon Society - Naval Air Station - New Attack Submarine |
| PETP | PolyEthyleneTerePhthalate |
| DMU | Diesel Multiple Unit - A Method Of Connecting Self-propelled Railway Vehicles Together To Form A Train Under The Control Of One Driver. |
| COE | Cab Over Engine (see Truck) - Common Operating Environment (military) |
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