Ice navigator, Capt. David "Duke" Snider, 60, a Canadian Coast Guard veteran with 35 years at sea, sits for a portrait aboard the Finnish icebreaker MSV Nordica next to a satellite image of ice conditions along the Northwest Passage as the ship sails the Chukchi Sea into the Arctic, Saturday, July 15, 2017. Snider, who is aboard to help guide the ship safely through the ice, has sailed into the Arctic hundreds of times and completed the entire passage twice. "Maneuvering a ship in ice takes an entirely different set of skills. You have to understand how ice moves and grows," said Snider. "It's a dance, a slow dance. That's what it's all about, getting the ship through without stepping on her toes." (AP Photo/David Goldman)
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