| Acronym | Meaning |
| FFRDC | Federally Funded Research & Development Center |
| MTE | Maintenance Training Equipment |
| YF | Covered Lighter (self-propelled) |
| LAMPS | Light Airborne Multi-purpose System |
| INAV | Inertial Navigation |
| YFRN | Refrigerated Covered Lighter (non Selfpropelled) |
| MSL | Mission Simulation |
| UIC | Unit Identification Code |
| CWI | Continuous Wave Illuminator |
| DBDD | Data Base Design Document Udi-e-21250b/mod |