| Acronym | Meaning |
 | UGV | Unmanned Ground Vehicles |
| AFSSO | Air Force Special Security Office |
| NASCOM II | Upgraded Version Of NASA Communications Network |
| HRDL | High-resolution Doppler Lidar |
| ESTEC | European Space Research And Space Technology Centre |
| ADDS | Aviation Digital Data Service |
| EMP | Electromagnetic Pulse |
| SAM | Subsynoptic Advection Model |
| GNU | GNU's Not UNIX (a Recursive Acronym) |
| GTF | Ground Test Facility |
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