Petty Officer 3rd Class Agustin Foguet, a damage controlman in the Coast Guard Cutter Polar Star’s engineering department, lays a test weld on a piece of the cutter’s vital machinery while underway in McMurdo Sound, Antarctica, Jan. 13, 2016. Damage controlman are the Coast Guard’s experts of metalworking and carpentry. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)