On July 19, 1957, five men stood at Ground Zero of an atomic test that was being conducted at the Nevada Test Site. This was the test of a 2KT (kiloton) MB-1 nuclear air-to-air rocket launched from an F-89 Scorpion interceptor. The nuclear missile detonated 10,000 ft above their heads.
A reel-to-reel tape recorder was present to record their experience. You can see and hear the men react to the shock wave moments after the detonation.
The placard reading “Ground Zero; Population Five” was made by Colonel Arthur B. “Barney” Oldfield, the Public Information Officer for the Continental Air Defense Command in Colorado Spring who arranged for the volunteers to participate.