| Acronym | Meaning |
| HU | Hungary (ISO 3166 Digram; FIPS 10-4 Country Code) |
| MDM | Michigan Dartmouth MIT Telescope Consortium |
| NIC | Network Interface Card -Nicaragua (ISO 3166 Trigram) |
| GINO | Godzilla In Name Only |
| ZM | Zambia (ISO 3166 Digram) |
| SGC | Server Gated Cryptography -Stargate Command |
| BMDG | British Military Doctrine Group |
| PIREPS | Pilot Reports |
| S/SSM | Surface-to-Subsurface Missile |
| AS | American Samoa (postal Symbol; ISO 3166 Digram) - Australia (FIPS 10-4 Country Code) |