| Acronym | Meaning |
 | USPTO | United States Patent And Trademark Office |
| IRS | Internal Revenue Service |
| NMB | National Mediation Board |
| CMHS | Center For Mental Health Services |
| REIS | Regional Economic Information System |
| NCIS | Naval Criminal Investigative Service |
| OPM | Office Of Personnel Management |
| OTS | Office Of Thrift Supervision |
| FNS | Food And Nutrition Service |
| AFS | Air Facility Sub-System |
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