Code 7
Fire brigade required.
ETA
Estimated Time of Arrival.
Affirmative
Yes or confirmation.
Negative
No or denial.
BOLO
Be on the lookout (used to alert officers to watch for a specific person or vehicle).
Backup
Request for additional units to assist.
All units
Directs all officers in the area to be aware or respond.
10-7
Out of service (officer is not available).
10-8
In service (officer is available and on duty).
10-9
Repeat the message.