| Acronym | Meaning |
 | DICASS | DIrectional Command Activated Sonobuoy System |
| CHN | China (ISO 3166 Trigram) |
| OR | Operating Room (surgery) - Operational/Operations Research -Oregon (postal Symbol) |
| REM | Rapid Eye Movement (sleep Phase) - Rosicrucian Egyptian Museum |
| MRSA | Methicillin-resistant Staphylococcus Aureus |
| ISB | Intermediate Staging Base |
| LF | Low Frequency |
| AFK | Away From Keyboard (Internet Chat Abbreviation) |
| STA | Scheduled Time Of Arrival - Surveillance And Target Acquisition |
| FAAD | Forward Area Air Defence |
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