When does the time for Drill #7 start and stop?

The time for Drill #7 begins with the application of the parking brake because this action indicates that the vehicle is set up and ready for operations. This is a critical step that ensures the vehicle will remain stationary while the driver engineer transitions to preparing the pump and supporting firefighting operations. The drill concludes after the completion of pumping, which signifies that all necessary tasks associated with establishing water supply and readiness for firefighting efforts are complete. This delineation ensures that all phases of the drill, from securing the vehicle to executing its operational functions, are effectively timed and evaluated.