The PASS device emits an audible alert when a firefighter stops moving. Which option describes this correctly?

• A. It helps track air usage during operations.
• B. It emits an audible alert when a firefighter stops moving.
• C. It is used to transmit voice commands from outside.
• D. It powers the lighting on the helmet.

Answer: (B)

The PASS device is a Personal Alert Safety System worn by firefighters to summon help if they become immobile. Its main function is to emit an audible alert when movement stops, so teammates can quickly locate and assist a downed or incapacitated firefighter. This is why the statement describing it as emitting an audible alert when a firefighter stops moving is the best fit. Other functions listed—tracking air usage, transmitting voice commands, or powering helmet lighting—are handled by different equipment or systems, not the PASS.