| Acronym | Meaning |
 | NAV | Navajo Language (ISO 639-2 Code) |
| BO | Back Orifice -Belarus (FIPS 10-4 Country Code) - Bolivia (ISO 3166 Digram) -Body Odor |
| SR | Serbian Language (ISO 639-1 Code) |
| SL | Sierra Leone (ISO 3166 And FIPS 10-4 Country Code Digram) -Start Line |
| USNG | United States National Grid |
| TS | Terasiemens - Thunderstorm (METAR Code) - Tunisia (FIPS 10-4 Country Code) -TinySex - Transsexual |
| CIAO | Critical Infrastructure Assurance Office - Component-Integrated ACE ORB |
| MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| CHF | Swiss Franc (ISO 4217 Currency Code) |
| JSEAD | Joint Suppression Of Enemy Air Defence (see SEAD) |
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