A U.S. Air Force B-52 Stratofortress from Minot Air Force Base, N.D., flies over the Lafayette Escadrille Memorial in Marnes-la-Coquette, France, April 20, 2016, during a ceremony honoring the 268 Americans who joined the French air force before the U.S. officially entered World War I. (U.S. Air Force photo/Tech. Sgt. Joshua DeMotts)