A Blue Alert is an emergency notification broadcast to the public when a law enforcement officer has been seriously harmed, killed, or gone missing in connection with their duties, and a suspect is still at large. It is designed to enlist the public's help in locating dangerous individuals who pose a threat to police or the wider community.
The name reflects its focus on law enforcement ('blue' being traditionally associated with police), much like Amber Alerts are linked with missing children and Silver Alerts with missing elderly people.
