| Acronym | Meaning |
 | AEN | Administrative Exception Note |
| VTVM | Vacuum Tube Voltmeter |
| MHZ | Megahertz |
| GALA | Geoscience Airborne Laser Altimeter |
| ATCSC | Air Traffic Control Systems Command Center |
| DCC | Direct Connect Service |
| NOS | National Ocean Service |
| GRI | Gas Research Institute |
| GONG | Global Oscillations Network Group |
| PCWG | Polar Climate Working Group |
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