Alaska Mega Machines

A rugged ship travels by highway, a fleet of machines fights a flood and powerful wind turbines generate enough energy for 100,000 residents.

A Yeti machine with 588 sharp teeth helps keep the coldest airport in America running. Mighty tugboats chew through ice chunks in the busiest port in Alaska. Soldiers become Arctic warriors in the coldest Army post in the country.

An entire island is powered by a single dam, soldiers embark on a dangerous training mission in one of the world's largest helicopters and Alaska's biggest boat lift hauls a 400-ton fishing ship.

Alaska's Coast Guard maintains enormous buoys to guide boats through perilous waters. Explosive machinery helps blast through ore to extract silver. A crew helps build Alaska's first ferry.

A barge carries an entire train along the high seas, a fish factory churns out seafood and a flying ambulance saves lives.

An airport is made from water and ice, hardy vehicles brave the Arctic to travel across the tundra and missiles standby to prevent a nuclear disaster.