Only in Alaska can you find an airport made from nothing but water and ice. Hardy vehicles brave the arctic to travel across the tundra. And next to a field of moose, 16 missiles stand by to prevent a nuclear disaster.

A unique barge carries an entire train along Alaska's high seas. A mega fish factory on a remote island churns out 3 million pounds of seafood a day. A flying ambulance saves lives 14,000 feet above Alaska's wilderness.

Alaska's Coast Guard fights dangerous waters to maintain buoys; machinery finds big rewards 800 feet below Alaska's surface; Alaskans build a steel ferry.

Alaskan engineers build a massive dam to power an entire town; the world's largest helicopters; Alaska's largest boat lift hauls a 400-ton fishing ship in high winds.

Alaskan engineers build a massive dam to power an entire town; the world's largest helicopters; Alaska's largest boat lift hauls a 400-ton fishing ship in high winds.

The premiere features a rugged ship built to withstand tsunami-size waves; a fleet of machines combating a massive flood in the Arctic Circle; and powerful wind turbines