It is the police code for Armed Robbery
These codes are NOT universal across the country and could mean different things in different agencies.
person reporting
It means they have triangulated a person who is listening in on their radio.
The police code, 10-16, is for a domestic disturbance.
Trouble code P0251 means:Injection pump A rotor/cam malfunction
gambling
You have a problem with the EGR system.
Stay out of area.
The letter D
I hear and understand you.
District Attorney