A small-boat crew from the Coast Guard Cutter Polar Star, aboard a 38-foot Landing Craft Vessel - Personnel, transits past an iceberg while underway for training in the Ross Sea near Antarctica, Jan. 29, 2015. The crew of Polar Star is underway near Antarctica in support of Operation Deep Freeze, part of the U.S. Antarctic program managed by the National Science Foundation. (U.S. Coast Guard photo by Petty Officer 1st Class George Degener)