Children lost in the wilderness, elderly people who have wandered away from home or the hospital, hikers lost in the woods, earthquake, flood, explosion, fire, train wrecks, plane crashes, tornadoes and other disasters - dog teams have a very special role in the world of search and rescue. The dogs' ultra-sensitive hearing, night vision, endurance and keen sense of smell have continually proven to be invaluable in the effort to locate missing persons and to return them home safe to their families and friends.