What should cabin crew do during a level 3 threat?

During a level 3 threat, which typically indicates a serious security risk, cabin crew must prioritize the safety and security of all passengers on board. Enhancing security measures is essential in this situation as it involves proactive steps to mitigate risks and protect passengers from potential harm. This could mean securing the cabin, preparing for potential evacuation procedures, or coordinating with security personnel and other crew members to assess the situation and respond effectively.

In contrast, regular communication with passengers may be more appropriate in less critical scenarios, where their comfort and understanding are being prioritized. Ignoring minor disturbances is not suitable during a serious threat, as even small issues can escalate. Starting the boarding process could further compromise safety, particularly if the situation requires immediate attention and action from the crew. Therefore, the focus should always be on enhancing security measures to ensure the well-being of everyone on board.