What is the first step in the pick-up hose method for filling the foam tank?

The first step in the pick-up hose method for filling the foam tank is to engage the water pump. This action is crucial because the water pump must be operational to create the necessary water pressure for the foam system to function effectively. Engaging the water pump ensures that water is available for mixing with the foam concentrate, which is essential for generating the correct foam mixture required for firefighting.

Starting with this step lays a solid foundation for the subsequent actions, such as activating the foam pump and attaching the pick-up hose. Without engaging the water pump first, the foam system would not receive the water needed to mix with the foam concentrate, which would hinder the overall process of filling the foam tank and utilizing the foam effectively during operations.