A lot has changed in 20 years.
Season 1, Episode 7
June 8, 2016
A look at a mega machine that keeps the Alaskan oil industry moving by hauling cargo on treacherous ice roads.
Season 1, Episode 6
June 1, 2016
An airport made from water and ice; a fish factory; and vehicles used to travel across the tundra.
Season 1, Episode 5
May 25, 2016
A train-carrying barge; a flying ambulance; and the national missile defense system.
Season 1, Episode 4
May 18, 2016
Alaska's Coast Guard, which maintains buoys that stand three stories tall; explosive machinery that yields big rewards 800 feet beneath ground; and a steel ferry.
Season 1, Episode 3
May 11, 2016
A dam is built to power a town on the remote island of Sitka. Also: the world's largest helicopters; and a boat lift, which hauls a 400-ton fishing ship in high winds.
Season 1, Episode 2
May 4, 2016
The Yeti, which helps keep the coldest airport in America running; tugboats that breakup ice in Alaska's busiest port; and the coldest Army post in the country.
Season 1, Episode 1
April 27, 2016
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.
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