| Acronym | Meaning |
 | IAUC | International Astronomical Union Circular |
| RDA | Research |
| A/S | Anti-submarine |
| GRN | Guaran Language (ISO 639-2 Code) |
| SCFS | Standard Cubic Foot Per Second (unit Of Measurement Of Fluid Flow) |
| SCOTUS | Supreme Court Of The United States |
| BLCSE | Battle Laboratory Constructive Simulation Environment |
| AFRC | Air Force Reserve Command |
| PUS | United States Miscellaneous Pacific Islands (ISO 3166 Trigram; Obsolete 1986) |
| SP | Special - Spring Tide (nautical Charts) |
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