Capt. David Snider of the Nautical Institute looks on as the Coast Guard Cutter Polar Star breaks ice in McMurdo Sound near Antarctica on Wednesday, Jan. 10, 2018. The crew of the Seattle-based Polar Star is on its way 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.