| Acronym | Meaning |
| SRB | Solid Rocket Booster |
| NISCAP | NSA Information System Certification And Accreditation Program |
| RNPS | Radio Network Planning System |
| NSB | Norges Statsbaner (Norwegian State Railways) |
| SONAR | SOund Navigation And Ranging |
| ADHD | Attention-Deficit Hyperactivity Disorder |
| ATC | Air Traffic Control - Air Training Corps - U.S. Air Transport Command (1942-1948) |
| JDCC | UK Joint Doctrine And Concepts Centre |
| ACINT | Acoustic Intelligence |
| XX | Twenty (in Roman Numerals) |