[Captain Walker]

Can the president order these men and women to the desert to take up a position in the vicinity of an atomic bomb test?

You don't sign away your humanity once you join the military; there are still lawful and unlawful orders.

[Mariner]

“Can the president order these men and women to the desert to take up a position in the vicinity of an atomic bomb test? “

Yes, and it’s been done a bunch of times.