Do pilots know if there is an air marshal?

Yes, pilots and flight crews are informed about the presence of air marshals on their flights. Airlines have protocols in place to ensure that armed individuals, such as air marshals and law enforcement officers, are introduced to both the cockpit and cabin crews prior to takeoff. This introduction includes verifying the air marshal's identification, which is crucial for maintaining security and ensuring that all crew members are aware of who is authorized to carry a weapon on board. Additionally, the crew is informed about the specific seat that the air marshal will occupy during the flight. This knowledge helps the flight crew to be vigilant and prepared in case of any security incidents, thereby enhancing the overall safety of the passengers and the aircraft.