| Acronym | Meaning |
 | ACEC | American Consulting Engineers Council |
| PFU | Proto Flight Unit |
| PCDS | Pilot Climate Data System |
| SCAR | Special Committee For Antarctic Research |
| MERT | Medical Emergency Response Team |
| NTCC | Nimbus Technical Control Center |
| MASER | Microwave Amplification By Stimulated Emission Of Radiation |
| CCNS | Concerned Citizens For Nuclear Safety |
| CCPP | Climate Change Prediction Program |
| NAVSTAR | NAVigation Signal Timing And Ranging System |
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