During the Fast Attack Drill, what must be done first after spotting the apparatus?

In the context of the Fast Attack Drill, checking the water supply is the most logical first step after spotting the apparatus. This is crucial because a reliable water supply is foundational for any firefighting operation. Before proceeding with other actions, such as deploying hose lines or engaging the pump, firefighters must ensure that they have adequate water flow available to effectively combat the fire.

Without a confirmed water supply, any subsequent actions could be futile, as there would be no water to use effectively against the flames. This prioritization emphasizes the importance of preparation and resource management in emergency situations, ensuring that firefighters are fully equipped to respond to the incident at hand.