Next airing Fri Jan 19, 6 p.m. ET

Justice Below Zero

In the Mat-Su Valley, one of Alaska's most crime-ridden areas, all units are on the lookout for a pickup whose driver is in possession of a stolen handgun. But they run into an obstacle when they find him. In the Talkeetna Mountains, pilot Mel Nading and veteran search and rescue expert Scott Horoseck scour terrain in a rescue chopper searching for lost snowmobilers.