| Acronym | Meaning |
| OFDA | U.S. AID?s Office Of Foreign Disaster Assistance |
| HTI | Haiti (ISO 3166 Trigram) |
| DMT | Dimethyltryptamine |
| POR | Proposed Operational Requirement |
| RV | Reconnaissance Vehicle - Recreational Vehicle - Re-entry Vehicle |
| CRI | Costa Rica (ISO 3166 Trigram) |
| CRTC | Canadian Radio-television And Telecommunications Commission |
| INFORMS | (U.S.) Institute For Operations Research And The Management Sciences |
| JN | Jan Mayen Island (FIPS 10-4 Territory Code) |
| OFA | Occipital Face Area |