| Acronym | Meaning |
| NSC | National Security Council |
| NRPC | National Railroad Passenger Corporation (AMTRAK) |
| OPM | Office Of Personnel Management |
| FNCS | Food |
| NRL | Naval Research Laboratory |
| NSTC | National Science And Technology Center |
| WTO | World Trade Organization |
| FLRA | Federal Labor Relations Authority |
| PHPPO | Public Health Practice Program Office |
| USMC | United States Marine Corps |