(WAVY) — It was a jolt to 1950s America, a nation projecting confidence abroad while confronting deep tensions at home. On Oct. 4, 1957, the world changed. And in Darmstadt, Germany, a 23-year-old U.S. Air Force radio operator named Lloyd Riddick found himself at the center of Cold War history. “Yeah, it was really shocking,” Riddick said. “I came back from dinner break and put on my headsets.