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The Yeti, a machine with 588 sharp teeth, helps keep an airport running. Tugboats break the ice in an Alaskan port. Soldiers stationed at the coldest army post in the US.
A ship built to endure tsunami size waves travels on a highway unlike any other in North America; a fleet of machines combats a huge flood in the Arctic Circle; the biggest, most powerful wind turbines in Alaska.
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.