Secretary of Defense Chuck Hagel, from left, French President... News Photo70th Anniversary,Anniversary,Arlington - Virginia,Arlington National Cemetery,Assistance,Cemetery,Chuck Hagel,Concentration,D Day,Europe,France,François Hollande,Horizontal,Laying a Wreath,Military,Normandy,Officer,Politics,President of France,Standing,Tomb,Tomb Of The Unknown Soldier - Arlington,US Military,USA,WreathPhotographer Collection: Getty Images News 2014 Getty ImagesARLINGTON, VA - FEBRUARY 11: U.S. Secretary of Defense Chuck Hagel, from left, French President Francois Hollande, and Maj. Gen. Jeffrey S. Buchanan, commander of the U.S. Army Military District of Washington, stand at attention after laying a wreath at the Tomb of the Unknown Soldier as 'Taps' is played at Arlington National Cemetery on February 11, 2014 in Arlington, Virginia. 2014 marks the 70th anniversary of the Allied Forces D-Day landing in Normandy, which helped lead to the liberation of France and the European continent. (Photo by T.J. Kirkpatrick/Getty Images)