The missing generation.

[stormlion1]

The other side of the coin is the possibility of dependent's being frozen and there the ones that fulfill your requirement of a new generation of non-radioactive people. I could see specially made Bolt Holes just for that purpose near Regional or Prime and can't be awoken by a signal but by someone actually digging them out. Not really for the various teams out across the country but for scientists and Fobbits at the various more or less permanent Morrow Bases.