How big is the enclave now

I know that their numbers have drastically dwindled. But the show showing a facility for the training of dogs for either use of their brains or maybe cybernetics or FEV possibly. For them just being the size of a paramilitary unit at this point they have a humongous amount of resources. And a decent amount of personnel, including a sizable amount of scientist. Is it possible that they climbed out of Chicago and rebuilt with the possible help of outside humans?