What is the role of PASS devices during operations?

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PASS devices provide a personal safety alarm that sounds if a firefighter is in distress, helping teammates locate and perform a rapid rescue. The audible alert is designed to cut through smoke, darkness, and chaos, so crews can quickly find an incapacitated or immobile firefighter and initiate search-and-rescue actions. These devices are typically set to auto-activate after a period of no movement or can be triggered manually by the wearer in danger. They are not used to monitor air quality, illuminate areas, or record communications, which is why the audible distress alarm and rescue aid is the correct role.