"I have to warn you that there's no going back after this point. You can still refuse to participate, once you hear the offer. But if you decline, you will be kept separate from the rest of the personnel on-site. That's non-negotiable, I'm afraid. Your only contact will be with other people who have the same information that you do, at least until this particular project has run its course. Any who wish to leave may do so now, with no hard feelings, and go back to the scanner arrays."