Espionage was a problem back in the cold war days...
This old sub-B movie has a few cool bits in it!
It has a big thermonulear explosion right at the beginning...
It talks about manned space flight and the movie is from 1954!
Foggy planet...
A General Dynamics nuclear sub launch! Probably the Nautilus. That was January of '54.
A new branch... for space... interplanetary space... Oh my...
And look at 3:20! Somebody must have been real close to space with a camera BACK IN 1954! No way! I have never seen that footage before.
A centrifuge!
"I resent that implication, these men are volunteers!" At 15:20 the doc talks about an unbreakable access code.