| Acronym | Meaning |
| TDA | Trade And Development Agency |
| OPIC | Overseas Private Investment Corporation |
| USSS | United States Secret Service |
| LOCIS | Library Of Congress Information System |
| OGWDW | Office Of Ground Water And Drinking Water |
| DLIS | Defense Logistics Information Service |
| NCI | National Cancer Institute |
| STB | Surface Transportation Board |
| IHS | Indian Health Service |
| NBII | National Biological Information Infrastructure |