What is the door guard's primary responsibility during breaks?

The primary responsibility of the door guard during breaks is to call a loud 2-minute warning before the next class session. This role is crucial as it helps maintain an organized transition between activities, ensuring that all cadets are aware of the time remaining before the next class starts. By providing this warning, the door guard supports effective time management within the training environment, helping cadets prepare to return to their classes promptly. This function is essential for maintaining the flow of the schedule and ensuring that cadets do not lose track of time during breaks.