| Acronym | Meaning |
| MCCS | Mission Critical Computer System |
| ATCH | Attach/attachment |
| WBS | Work Breakdown Structure (mil-std 881) |
| COMM | Communication |
| ESS | Environmental Stress Screening |
| EGCS | Environmental Generation & Control System |
| COTR | Contracting Officers Technical Representative |
| VECP | Value Engineering Change Proposal |
| ELF | Communications System |
| PRV | Pressure Regulator Valve |