| Acronym | Meaning |
 | NPTO | National Petroleum Technology Office |
| FDIC | Federal Deposit Insurance Corporation |
| GAO | Government Accountability Office |
| NSA | National Security Agency |
| FBCI | Faith-Based And Community Initiatives |
| NWCG | National Wildfire Coordinating Group |
| OA | Office Of Administration |
| DECA | Defense Commissary Agency |
| NHI | National Highway Institute |
| FEDIX | Federal Information Exchange Inc. (ceased Operation 7/3/02) |
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