| Abbreviation | Definition |
|---|---|
| MTC | ssile Technician Chief Petty Officer |
| MTSA | Missile Technician Seaman Apprentice |
| MTSA | ssile Technician Seaman Apprentice |
| MTSN | Missile Technician Seaman |
| MTSN | ssile Technician Seaman |
| MTSR | Missile Technician Seaman Recruit |
| MTSR | ssile Technician Seaman Recruit |
| MU1 | Musician Petty Officer 1st Class |
| MU1 | sician Petty Officer 1st Class |
| MU2 | Musician Petty Officer 2nd Class |
| MU2 | sician Petty Officer 2nd Class |
| MU3 | Musician Petty Officer 3rd Class |
| MU3 | sician Petty Officer 3rd Class |
| MUCA | Musician Chief Petty Officer |
| MUCA | sician Chief Petty Officer |
| MUCM | Musician Master Chief Petty Officer |
| MUCM | sician Master Chief Petty Officer |
| MUCS | Musician Senior Chief Petty Officer |
| MUCS | sician Senior Chief Petty Officer |
| MUS1 | Musician 1st Class Petty Officer |