999
Officer down / Officer in distress (immediate response needed)
Code 1
Responding to a call (en route to a location)
Code 2
Urgent response (priority, but no lights and sirens)
Code 3
Emergency response (with lights and sirens)
Code 4
Situation under control (no further assistance needed)
Code 5
Stakeout or surveillance
Code 6
Request for backup
Code 7
Armed suspect
Code 8
Bomb threat or suspicious package
Code 9
The officer needs assistance (emergency)