U.S. President Barack Obama, second from left foreground,

U.S. President Barack Obama, second from left foreground, shakes hands with a World War II veteran during a ceremony for the 70th anniversary of the D-Day invasion in Colleville-sur-Mer in Normandy, France, June 6, 2014. The morning of June 6, 1944, Allied forces conducted a massive airborne assault and amphibious landing in the Normandy region of France. The invasion marked the beginning of the final phase of World War II in Europe, which ended with the surrender of Germany the following May. (U.S. Air Force photo by Staff Sgt. Sara Keller/Released)