These 5 guys stood under a nuclear explosion at ground zero

Ah the 50`s where everything was healthy and even atomic explosions were safe to be around, and if you`re curious these guys volunteered, talk about crazy stuff.
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 five volunteers were:
Colonel Sidney Bruce
Lt. Colonel Frank P. Ball (technical advisor to the Steve Canyon tv show)
Major Norman "Bodie" Bodinger
Major John Hughes
Don Lutrel

and George Yoshitake, the cameraman (who wasn't a volunteer)

Would be interesting to know if anyone of these guys are still alive.