| Acronym | Meaning |
 | AO | Angola (FIPS 10-4 Country Code; ISO 3166 Digram) -Approach Officer (submarine) - Area Of Operations |
| HUMINT | Human Intelligence (military Parlance) |
| QCA | Qualifications And Curriculum Authority - Quality Council Of Alberta |
| FQ | Baker Island (FIPS 10-4 Territory Code) - French Southern And Antarctic Territories (ISO 3166 Digram; Obsolete 1979) |
| TACAMO | Take Charge And Move Out (U.S. Military) |
| MJ | Millijoule |
| EOTS | Electro-Optical Tactical Sensor |
| ATC | Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948) |
| BSX | Bendigo Stock Exchange |
| DODD | U.S. Department Of Defense Directive |
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