What action helps ensure a safe working environment during vehicle rescues?

Disconnecting the battery during vehicle rescues is a crucial action to ensure a safe working environment. When dealing with damaged vehicles, there is a risk of electrical hazards, especially if the vehicle's electrical system is compromised. Disconnecting the battery prevents potential electrocution from live wires or accidental airbag deployment, which can cause serious injury to rescuers. By eliminating this risk, firefighters can conduct their operations more safely and effectively, focusing on the rescue without the imminent danger that a live electrical system may present.

While other safety measures like using safety goggles, wearing gloves, and establishing a perimeter are also important for overall safety during rescue operations, ensuring that the vehicle's electrical system is not a threat is a specific action that directly mitigates one of the more immediate dangers present in vehicle accidents.