Members of the Coast Guard Cutter Polar Star’s engineering department make repairs in the ship’s motor room while in the Ross Sea near Antarctica on Tuesday, Jan. 16, 2018. The crew of the Seattle-based Polar Star is on deployment to Antarctica in support of Operation Deep Freeze 2018, the U.S. military’s contribution to the National Science Foundation-managed U.S. Antarctic Program. U.S. Coast Guard photo by Chief Petty Officer Nick Ameen.