| Acronym | Meaning |
 | OAS | Organization Of American States |
| OECD | Organization For Economic Cooperation And Development |
| DFAS | Defense Finance And Accounting Service |
| OSM | Office Of Surface Mining; Office Of Spectrum Management |
| ONR | Office Of Naval Research |
| TAA | Trade Adjustment Assistance |
| NVSS | National Vital Statistics System |
| ORACBA | Office Of Risk Assessment And Cost-Benefit Analysis |
| NACIC | National Counterintelligence Center |
| NCJRS | National Criminal Justice Reference Service |
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