| Acronym | Meaning |
| RIU | Radar Interface Unit |
| MPN | Military Personnel-navy (appropriation) |
| FTS | Federal Telecommunications System |
| PHMS | Pilot Helmet Sight System |
| TTL | Transistor Transistor Logic |
| LLCSC | Loser-level Computer Software Component |
| MAD | Magnetic Anomaly Detection (asw) |
| WPN | Weapons Procurement Navy |
| TBD | To Be Determined |
| L | Left |