| Acronym | Meaning |
 | PRFG | Partial Fog (METAR Code) |
| NCA | National Command Authority |
| CW | Continuous Wave (laser) -Cook Islands (FIPS 10-4 Territory Code) |
| CWS | Canadian Wildlife Service |
| JL | Japan Airlines (IATA Airline Designator) |
| PI | PolyImide - PolyIsoprene - Private Investigator |
| AGN | Active Galactic Nucleus |
| DHRA | (U.S.) DoD Human Resources Activity |
| SEATO | Southeast Asian Treaty Organization |
| MH | Marshall Islands (postal Symbol; ISO 3166 Digram) - Megahenry - Montserrat (FIPS 10-4 Territory Code) |
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