Get real, there's never going to be a manned mission to Mars.

Just like there's not going to be another one on the Moon (assuming it actually happened the first time, which most likely didnt).

No life will be able to leave Earth, its not going to happen. The radiation is way too strong and there are no tools, items, or technology that can withstand that radiation with lifeforms onboard.

If there was, it'd be used to clean up nuclear messes and disasters here on Earth instead of peoples limbs falling off cleaning up the mess.