Will the Secret Space Program membership be disposed of once they have carried out their duties for the planned annihilation of humanity, or will they be needed to police a core breeding stock of humans to continue to serve the alien Grey breeding program?

There will be a few who are preserved more or less as low-level officers in charge of groups of human clones who will do the large portion of guard duty and further annihilations as needed. But most of the Secret Space Program membership will themselves be exterminated when humanity has been taken care of.