Master Mariner Jyri Viljanen, 56, captain of the Finnish icebreaker MSV Nordica stands for a portrait in the ship's bridge as it sails north in the Bering Sea toward the Arctic, Thursday, July 13, 2017. Viljanen has been going to sea for 39 years and this will be his first transit through the Arctic's Northwest Passage. "It's once a lifetime," said Viljanen. "The biggest risk is these are very remote areas so if anything happens it's very difficult to get any help or rescue or anything." (AP Photo/David Goldman)
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