The crew of Canadian Coast Guard ice breaker Sir Wilfrid Laurier prepares to head east from Barrow, Alaska, July 24, 2017. The Sir Wilfrid Laurier and fishing vessel Frosti crews accompanied the crew of U.S. Coast Guard Cutter Maple through an ice field beginning approximately 100 miles east of Barrow. (U.S. Coast Guard photo by Petty Officer 2nd Class Steven Rogalin/Released)