The U-2 spy plane was supposed to disintegrate in a crash. It was supposed to leave no debris that could be traced back to the United States, and the pilot was expected to the be killed. Nothing was meant to survive a fall from 70,000 feet with secrets intact. It was, in effect, a security measure U-2 program managers were banking on. But then one did. Francis Gary Powers and his U-2 survived being downed over the Soviet Union on May 1, 1960. The famous May Day Incident had effects on the Cold War beyond what anyone could have imagined.