| Acronym | Meaning |
 | EMP | Electromagnetic Pulse |
| HARS | High-Altitude Route Structure Workstation |
| CCCS | Change And Configuration Control System |
| IRIS | Infrared Interferometer Spectrometer |
| AGS | Annulus Gas System |
| AIS | Affiliate Information System |
| AARP | American Association Of Retired People |
| STJ | Subtropical Jet |
| ACR | Active Cavity Radiometer |
| STEP | Solar Terrestrial Energy Program |
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