Chief Petty Officer Joshua Morris, a damage controlman in the Coast Guard Cutter Polar Star’s engineering department, heats up a section of metal to prepare it for welding while underway in McMurdo Sound, Antarctica, Jan. 13, 2016. The icebreaker’s damage control shop has tools for making temporary or permanent repairs on much of the on board machinery. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)