| Acronym | Meaning |
 | IUSS | Integrated Undersea Surveillance System - Integrated Unit Simulation System - International Union Of Soil Science |
| PRI | Puerto Rico (ISO 3166 Trigram) |
| FTE | Full Time Equivalent |
| JFACTSU | U.S. Joint Forward Air Control Training And Standards Unit |
| NTC | National Training Center - Negative Temperature Coefficient (thermistor) |
| DMT | Dimethyltryptamine |
| IHS | Institut Des Hautes ?tudes Scientifiques (French |
| KH | Kilohenry |
| PH | Parts Of Hydrogen (acidity/alkalinity Index) - Picohenry |
| WRAC | Women's Royal Army Corps (WWII UK) |
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