Who is responsible for briefing about threat levels during a flight?

The responsibility for briefing about threat levels during a flight lies with the Flight Deck Briefers. This role typically comprises the flight crew, specifically the pilots, who must ensure that all safety protocols regarding potential threats are communicated properly to the cabin crew and are aware of procedures to follow in various situations.

The pilots are trained to assess and respond to various threat levels, such as security risks or onboard emergencies. As they have direct control over the flight and are responsible for the overall safety of passengers and crew, it is crucial for them to convey necessary information regarding any potential threats and the procedures to mitigate those threats.

Passenger Briefers primarily focus on the safety of the passengers in terms of general safety instruction, while Emergency Response Coordinators handle plans and procedures but are not typically present in-flight to brief about immediate threat levels. Ground Staff Coordinators deal with logistics and passenger handling at the airport, making them less relevant for in-flight threat briefings.