Three restored World War II-era P-47 Thunderbolt fighters fly in formation during a warbird air show. The center aircraft wears black-and-white 'invasion stripes,' the recognition markings painted on Allied aircraft for the June 1944 Normandy invasion to reduce the risk of friendly fire. Formation flights like this one preserve the memory of the pilots and aircrews who flew these fighters in combat over Europe and the Pacific. Project: 219309