French President Francois Hollande leaves after delivering his speech during a ceremony in tribute to civil victims at the Caen Memorial, western France, Friday.The Associated Press

U.S. President Barack Obama and French President Francois Hollande participate in the 70th French-American commemoration D-Day ceremony at the Normandy American Cemetery and Memorial in Colleville-sur-Mer, France on Friday.The Associated Press

President Barack Obama and French President Francois Hollande look out over Omaha Beach at the Normandy American Cemetery and Memorial in Colleville-Sur-Mer, Normandy, France, Friday.The Associated Press

Britain's Prince Philip, French Prime Minister Manuel Valls and Britain's Queen Elizabeth II, from left, attend the Service of Remembrance, at the Commonwealth War Graves Commission Cemetery, in Bayeux, France, Friday.The Associated Press

French President Francois Hollande lays a wreath in tribute to civil victims at the Caen Memorial, in Caen, western France, Friday.The Associated Press

British Prime Minister David Cameron, left, and his wife Samantha, sing, during the Service of Remembrance, at the Commonwealth War Graves Commission Cemetery, in Bayeux, France, on Friday June 6, 2014, as part of the D-Day commemorations.The Associated Press

Australian World War II veterans place crosses and flags at graves before attending a French-British ceremony at the British War cemetery in Bayeux, Normandy, France, Friday.The Associated Press