Crewmembers assigned to Coast Guard Cutter Mackinaw and volunteers from the Sea Cadets pose for a picture by the last of 1,300 Christmas trees to be offloaded from cutter Mackinaw at Chicago's Navy Pier Dec. 1, 2012.  The cutter crew brought 1,300 Christmas trees from northern Michigan to recreate Chicago's historic Christmas Ship.U.S. Coast Guard photo by auxiliarist Jay Katzman
<br>Unit: U.S. Coast Guard Headquarters
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