Four U.S. Air Force Century-series fighters in flight in 1957. These supersonic fighters were tested by the NACA Dryden Flight Research Center at Edwards Air Force Base, California (USA). The aircraft visible are:
McDonnell F-101A-5-MC Voodoo (s/n 53-2430, top),
Lockheed XF-104A Starfighter (53-7786, left). This aircraft crashed on 11 July 1957 due to an uncontrollable tail flutter. The pilot, Bill Park, ejected safely,
Convair F-102A-20-CO Delta Dagger (53-1805, right),North American F-100A-20-NA Super Sabre (53-1663, bottom).