The Coast Guard Cutter Polar Star sits in fast ice in front of Mt. Erebus in McMurdo Sound, Antarctica, Jan. 7, 2016. The Polar Star crew will break a channel through 13 miles of fast ice in McMurdo Sound to escort fuel and cargo vessels to the National Science Foundatin's McMurdo Station for resupply. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)