Season 4

A suspected toxic leak grounds a 737 at Anchorage International, engine trouble endangers the mid-air refueling of the USAF's most advanced fighter jet in Alaska, and a discovery at airport customs busts a potential smuggling.

Crews at Alaska's biggest airport race to repair a broken snowblower in advance of a major winter storm, and a group of Air Force pilots learn how to survive in extreme Arctic conditions.

A family-run airline flies emergency supplies to a remote village hit by water pollution. Alaska's biggest cargo airline loads high explosives on a busy runway, and Anchorage's elite pilots come to the rescue of a holiday party.

Record-breaking snow in Anchorage could shut the airport. A novice pilot tests his nerve landing on a frozen lake. USAF aircrews battle the toughest Arctic survival training and a unique aircraft workshop Alaska-proofs a vintag.

NOAA Hurricane Hunters prepare to fly into the heart of a storm, harsh weather threatens vital combat training for U.S. Air Force pilots, and a vintage plane makes an extraordinary journey.

Travelers from Anchorage get stranded halfway to an island in the Bering Sea, extreme skaters fly into the wilderness in search of Wild Ice, and Alaska's premium cargo airline fights to deliver a team of huskies.

Alaska's aviators fly into the wild for the world's toughest snowmobile race, Anchorage mechanics wrestle with a damaged 737's jet engine, and scientists take to the air to fight back against floods devastating remote communities.

A bush plane resupply mission nearly ends in disaster, veterinarians brave winter storms to bring canine care to a remote village, and U.S. Air Force personnel train over the Alaskan tundra.

A 747 mayday triggers an emergency, a young Indigenous student pilot practices challenging landing techniques, and an extreme surfer flies high to find waves at America's coolest surf spot.

A bar owner takes flight on an Alaskan beer run, engineers work to clear a cargo plane of corrosion, a retired 727 finds a new home, and mechanics rid a bush plane's wing of a rat's nest.