| Acronym | Meaning |
 | IAP | International Affiliates Program |
| POSIX | Portable Operating System Interface For Computer Environments |
| PPS-PODS | Precise Position System- Precise Orbit Determination System |
| AT | Antarctic Treaty |
| NPRM | Notice For Proposed Rule Making |
| FEWS | Follow-on Early Warning System |
| ACCD | Aircraft Compatibility Control Drawing |
| DETEC | Defense Technology Evaluation Code |
| IARP | International Atmospheric Research Program |
| NADO | New Airport Development Office |
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