The crew of the Coast Guard Cutter Alder, homeported in Duluth, Minn., is escorted by a boat from the Chicago Fire Department as they prepare to moor at Chicago's Navy Pier, Dec. 2, 2011. Alder's crew is acting as Chicago's "Christmas Ship," bringing more than 700 trees from northern Michigan to be distributed by charity groups to Chicago-area families. U.S. Coast Guard photo by Petty Officer 3rd Class George Degener.