Coast Guard Cutter Chock, home-ported in Baltimore, gets underway from Curtis Bay, Maryland, Jan. 3, 2018, to evaluate ice conditions in the Chesapeake Bay. The Chock traveled to Tangier Island, Virginia, where the waterways are the primary route for commercial traffic. (U.S. Coast Guard video by Petty Officers 3rd Class Ronald Hodges and Jasmine Mieszala)