| Acronym | Meaning |
 | OACU | Office Of Animal Care And Use |
| GNIS | Geographic Names Information System |
| NIAMS | National Institute Of Arthritis And Musculoskeletal And Skin Diseases |
| USDA | United States Department Of Agriculture |
| NNSA | National Nuclear Security Administration |
| SSI | Supplemental Security Income Program |
| NINDS | National Institute Of Neurological Disorders And Stroke |
| NASS | National Agricultural Statistics Service |
| OSWER | Office Of Solid Waste And Emergency Response |
| AFS | Air Facility Sub-System |
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