Los Angeles County Fire Department
| AIQ | AVAILABLE IN QUARTERS |
| AOR | AVAILABLE ON RADIO |
| ALERT 1 | AIRCRAFT EMERGENCY: WARNING LIGHT |
| ALERT 2 | AIRCRAFT EMERGENCY: EMERGENCY (IFE) DECLARED |
| ALERT 3 | AIRCRAFT EMERGENCY: AIRCRAFT DOWN |
| ALERT W | AIRCRAFT EMERGENCY: OVER WATER |
| CODE A | ARSON INVESTIGATORS |
| CODE D | INVESTIGATOR |
| CODE F | FATALITY |
| CODE L | LAW ENFORCEMENT |
| CODE N | NOTIFY NEWS MEDIA |
| CODE R | RESPOND EMERGENCY (LIGHTS & SIRENS) |
