In a Threat Level 3 scenario during flight, what should the flight attendant do after notifying the PIC?

In a Threat Level 3 scenario, the flight attendant's primary responsibility is to ensure the safety and security of all passengers on board. After notifying the Pilot in Command (PIC), following flight deck lockdown procedures is essential. Locking down the flight deck helps to secure the area against potential threats, ensuring that unauthorized individuals cannot access critical controls that could jeopardize the aircraft's safety. This procedure is a vital part of the security protocol designed to protect passengers and crew during heightened threat levels.

The importance of this action is underscored by the need for a coordinated response to any potential threats, which helps to prevent escalation and safeguard everyone on board. Ensuring the flight deck is secure allows the flight crew to focus on managing the situation effectively, making it a critical step in response to Threat Level 3 incidents.