1.   As the camera pans around the meat locker, an avalanche beacon can be heard pinging.

2.   For safety reasons, avalanche beacons are provided.

3.   Skiers must wear avalanche beacons, which help rescuers locate and save them.

4.   The most fervent backcountry snowshoers carry avalanche beacons, which emit an electronic signal so victims can be located if they get buried.