Cmdr. Bill Woityra, manager for domestic and polar icebreaking for the U.S. Coast Guard, looks out to sea while passing the American island of Little Diomede, Alaska, left, and the Russian island of Big Diomede, right, as the Finnish icebreaker MSV Nordica sails along the international date line through the Bering Strait, Friday, July 14, 2017. The international date line divides the two islands, so Little Diomede is sometimes referred to as Yesterday Isle and Big Diomede as Tomorrow Island. (AP Photo/David Goldman)
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