How Search and Rescue Works

You've seen it on the news -- a hiker goes missing, and the woods swarm with helicopters, dogs and volunteer searchers. How do search-and-rescue teams explore the depths of the sea and sift through piles of rubble to find survivors?

Every time a hiker is lost in the woods, the local news stations will no doubt show images of helicopters buzzing overhead, German Shepherds sniffing the forest… » Full Story on HowStuffWorks