The Coast Guard Cutter Polar Star, a high-endurance icebreaker home-ported in Seattle, sits on the ice in the Ross Sea near Antarctica while underway in support of Operation Deep Freeze 2015, Jan. 9, 2015. Deep Freeze is a multi-agency operation, the military component of the U.S. Antarctic program, which is managed by the National Science Foundation. (U.S. Coast Guard photo by Petty Officer 1st Class George Degener)