Guests, including U.S. Chairman of the Joint Chiefs of Staff Gen. Mark Milley and U.S. Secretary of Defense Lloyd Austin, watch as a French elite acrobatic flying team soars over Tuesday's ceremony at the Normandy American Cemetery and Memorial. Lou Benoist/AFP via Getty Images hide caption
Yevgeniy Medvedovskiy, the chief of the Zhytomyr region's department of ecological inspection, walks around the site of the jet crash picking up shards of metal and looking at the fallen trees. Claire Harbage/NPR hide caption
The U.S. Army's Autonomous Remote Engagement System is mounted on the Picatinny Lightweight Remote Weapon System and coupled with an M240B machine gun. It's part of a program that reduces the time to identify targets using automatic target detection and user-specified target selection. U.S. Army hide caption
An Army horse wears a gas mask to guard against German gas attacks. Courtesy of U.S. National Archives hide caption