When must safety personnel leave an event?

Safety personnel are responsible for ensuring the safety and orderly evacuation of an audience during and after an event. Their role does not end when the main event concludes or when their shift officially ends. It is crucial for safety personnel to remain on-site until the entire audience has left the venue. This ensures that any potential safety issues are addressed, and that no one is left behind in the building. The presence of safety personnel until the last audience member has exited contributes to an organized and secure departure process, minimizing the risk of accidents or confusion.

In contrast, leaving when the main event is over or when their shift ends might leave attendees without necessary guidance or support in the event of an incident or emergency during the dispersal process. Similarly, focusing solely on detaining lost items does not address the broader responsibility of ensuring that everyone safely exits the venue. Therefore, the correct answer emphasizes the importance of maintaining safety measures for the audience throughout the entire duration of their time at the event.