| Acronym | Meaning |
| SSS | System/segment Specification |
| KI | Knowledge Information |
| NAD | Naval Aviation Depot (formerly Narf) |
| USMC | United States Marine Corps |
| TACTAS | Tactical Towed Array Sonar |
| TSSA | Training Systems Support Activity |
| RAPID | Reusable Ada Products For Information Systems Development |
| AVIM | Aviation Intermediate Maintenance |
| HMS/DS | Helmet Mounted Sight/display System |
| RTN | Return |