| Acronym | Meaning |
 | SLAC | Stanford Linear Accelerator Center |
| RUS | Rural Utilities Service |
| NPS | National Park Service |
| CPMS | Defense Civilian Personnel Management Service |
| MIGA | Multilateral Investment Guarantee Agency |
| ERS | Economic Research Service |
| FIPS | Federal Information Processing Standard |
| HPCC | High Performance Computing And Communications |
| USFA | U.S. Fire Administration |
| NHLBI | National Heart |
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