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 747 mayday triggers an emergency on Anchorage runways. A young aviator learns to fly to feed her village, military pilots navigate Alaska's icy peaks to be combat-ready, and an extreme surfer flies high to find waves at America.