| Abbreviation | Definition |
|---|---|
| FCCS | Fire Control Technician Senior Chief Petty Officer |
| FCCS | re Control Technician Senior Chief Petty Officer |
| FCO1 | Fire Controlman (operator) Petty Officer 1st Class |
| FCO1 | re Controlman (operator) Petty Officer 1st Class |
| FCO2 | Fire Controlman (operator) Petty Officer 2nd Class |
| FCO2 | re Controlman (operator) Petty Officer 2nd Class |
| FCO3 | Fire Controlman (operator) Petty Officer 3rd Class |
| FCO3 | re Controlman (operator) Petty Officer 3rd Class |
| FCPOA | First Class Petty Officer Association |
| FCR3 | Fire Controlman (radar Finder) Petty Officer 3rd Class |
| FCR3 | re Controlman (radar Finder) Petty Officer 3rd Class |
| FCS1 | Fire Controlman (submarine) Petty Officer 1st Class |
| FCS1 | Fire Controlman (submarine) Petty Officer 1st Class |
| FCS1 | Fire Controlman (surface Weapons) Petty Officer First Class |
| FCS1 | re Controlman (surface Weapons) Petty Officer First Class |
| FCS2 | Fire Controlman (submarine) Petty Officer 2nd Class |
| FCS2 | Fire Controlman (submarine) Petty Officer 2nd Class |
| FCS2 | Fire Controlman (surface Weapons) Petty Officer Second Class |
| FCS2 | re Controlman (surface Weapons) Petty Officer Second Class |
| FCS3 | Fire Controlman (submarine) Petty Officer 3rd Class |