In this Thursday, July 6, 2017 photo, researchers Scott Joblin, from left, and Ilona Mettiainen, wear life vests during a safety drill with fellow personnel aboard the Finnish icebreaker MSV Nordica as it sails the North Pacific Ocean to traverse the Arctic's Northwest Passage. The MSV Nordica icebreaker has all the safety equipment of a modern oceangoing vessel, plus some more because it works in hostile and remote Arctic waters. In a general emergency, such as a hole in the hull, those aboard would grab a survival suit stowed beneath each bunk and head for one of two muster stations on deck to don a life vest. (AP Photo/David Goldman)
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