Cmdr. John Stone, commanding officer of the Coast Guard Cutter Mackinaw, addresses the crowd at this year’s Chicago’s Christmas Tree Ship ceremony at Chicago's Navy Pier, Dec. 2, 2017. The Mackinaw once again served as the Christmas Tree Ship, bringing more than 1,200 Christmas trees from northern Michigan to needy families in Chicago. (U.S. Coast Guard photo by Master Chief Petty Officer Alan Haraf)