| Acronym | Meaning |
| VRR | Voice Recognition Response |
| HG | Inches Of Mercury |
| PCO | Procurement Contracting Officer |
| RTSP II | Real Time Signal Processor |
| PDSL | Power Demand Signal Left |
| ISI | Information Spectrum Inc |
| IMD | Intregrated Map Display |
| UNCRYPT | Universal Cryptological Processor Training |
| NIST | National Institute Of Standards & Technology |
| CCB | Configuration Control Board |