1970's Manned Mission To Mars?

[BIAD]

...My husband likes this subject, he says we had to start with something we understood before
we had Reversed Engineered any Alien Tech for space travel...'

I suppose the principle in going to the moon would be the same for Mars, just a different -more lasting,
propulsion system. Nuclear power would be the probable one and being clandestine, all the concerns we
have down here on Earth wouldn't be applicable!