What must a law enforcement officer do upon arriving at the gate before flying armed?

Identifying themselves and reporting to the pilot is a critical protocol for law enforcement officers who are flying armed. This procedure ensures clear communication and establishes the presence of an armed officer on the flight, which is important for both the safety of the passengers and the crew, as well as to comply with aviation security regulations. By notifying the pilot, the officer helps to maintain situational awareness and ensures that the crew is aware of any additional security measures that may be necessary.

This step is crucial because it informs the flight crew about the officer's role during the flight, which can be especially important in the event of an emergency. Proper identification and communication enhance the teamwork between the law enforcement officer and the flight crew, promoting a safer environment for everyone on board.