| Acronym | Meaning |
 | JO | Jordan (FIPS 10-4 Country Code; ISO 3166 Digram) |
| AGI | Auxiliary Group Intelligence |
| SIMPLE | Satellite Interactive Multimedia Platform For Low-cost Earth Stations - Savings Incentive Match Plan For Employees (as Used In SIMPLE IRA) - Standard Interface For Multiple Platform Link Evaluation (NATO STANAG 5602) |
| ATC | Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948) |
| IK | Inupiaq Language (ISO 639-1 Code) |
| WLB | Women's Land Brigade (WWII Canada) |
| SIMNET | SIMulator NETwork |
| SSK | Hunter-Killer Submarine (retired US Navy Hull Classification) |
| RTLS | Return To Launch Site - Period In NASA Space Shuttle Assent Profile Where |
| TANJ | There Ain't No Justice (used As Expletive In The Ringworld Novels) |
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