| Acronym | Meaning |
 | TSO | The Stationery Office (was HMSO Until 1996) - (U.S.) TRICARE Support Office |
| FO | Faroe Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) -Force Operations (military) - Forward Observer - Frame Optional (military Symbology) |
| Q2 | Second Quarter |
| UNCLOS | United Nations Convention On The Law Of The Sea |
| JEFX | Joint Expeditionary Force EXperiment |
| ACLS | Alternate Crops And Systems Lab |
| NP | National Permit - A Permit In India For Trucks So They Can Go Anywhere In The Nation. |
| PRY | Paraguay (ISO 3166 Trigram) |
| LSO | Lesotho (ISO 3166 Trigram) |
| SNS | Spallation Neutron Source |
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