| Acronym | Meaning |
 | TSI | Transportation Safety Institute |
| OIIA | Office Of Intergovernmental And Interagency Affairs |
| AMTRAK | National Railroad Passenger Corporation |
| NGS | National Geospatial Intelligence School (reorganized Into DGS And SGST) |
| BEST | Biomonitoring Of Environmental Status And Trends |
| NIGC | National Indian Gaming Commission |
| USMC | United States Marine Corps |
| AHS | American Housing Survey |
| OSERS | Office Of Special Education And Rehabilitative Services |
| OTJ | Office Of Tribal Justice |
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