| Acronym | Meaning |
 | ARC | Appalachian Regional Commission |
| FRB | Federal Reserve Board |
| NACIC | National Counterintelligence Center |
| INL | Bureau For International Narcotics And Law Enforcement Affairs |
| NCHS | National Center For Health Statistics |
| AMTRAK | National Railroad Passenger Corporation |
| OECD | Organization For Economic Cooperation And Development |
| CIAO | Critical Infrastructure Assurance Office |
| NCBI | National Center For Biotechnology Information |
| NHTSA | National Highway Traffic Safety Administration |
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