What is the first step the ground crew must take during a ground emergency?

The first step the ground crew must take during a ground emergency is to prevent any human exposure. This action is crucial because ensuring the safety of personnel is the top priority in an emergency situation. If there is an immediate threat to humans, such as hazardous materials or a spill, taking measures to keep individuals away from the affected area can prevent injuries and limit exposure to harmful substances.

Preventing exposure encompasses establishing a safe perimeter around the hazard and coordinating the movement of personnel to ensure that everyone is away from danger. Once human safety is secured, the crew can then proceed to other critical actions such as notifying authorities, containing spills, and ultimately beginning cleanup operations. Prioritizing human safety first sets the stage for an effective response to the emergency.