| Acronym | Meaning |
 | USFA | U.S. Fire Administration |
| USAF | United States Air Force |
| RBS | Rural Business-Cooperative Service |
| NWS | National Weather Service |
| OSAC | Overseas Security Advisory Council |
| NRC | Nuclear Regulatory Commission |
| MAC | Market Access And Compliance |
| EO | Executive Order |
| ARS | Agricultural Research Service |
| IBB | International Broadcasting Bureau |
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