70th D-Day Anniversary

Paratroopers are dropped over the Normandy countryside, near Ranville in western France, as part of the commemoration of the 70th anniversary of D-Day, June 5, 2014.

British D-Day veteran George French, 88, from Wiltshire, who served with King's Royal Rifles looks out to the water as he stands on Sword Beach at Hermanville-sur-Mer on the Normandy coast June 5, 2014.

British D-Day veterans, all from Wiltshire, stand on Sword Beach at Hermanville-sur-Mer on the Normandy coast, June 5, 2014.

A Scottish pipe band parades on Pegasus Bridge in Benouville, France, as part of the commemoration of the 70th anniversary of D-Day, June 5, 2014.

A remembrance ceremony is held at Pegasus Bridge memorial in Benouville, France, as part of the commemoration of the 70th anniversary of D-Day, June 5, 2014.

The High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter often takes images of Martian sand dunes to study the mobile soils. These images provide information about erosion and movement of surface material, about wind and weather patterns, even about the soil grains and grain sizes. (Image Credit: NASA/JPL-Caltech/University of Arizona)

Visitors look at Omaha Beach from the Normandy American Cemetery and Memorial, in Colleville sur Mer, France, June 4, 2014.

U.S. soldiers from the 82nd airborn company from Fort Bragg, North Carolina, walk on the beach of Saint Laurent sur Mer, also called Omaha Beach, as part of the commemoration of the 70th D-Day anniversary, June 4, 2014.

Paul Clifford, 70, from Boston, Massachusetts, stands after placing flowers on a grave in the Normandy American Cemetery and Memorial, in Colleville sur Mer, France, June 4, 2014.