[Two full dorms is an insane project, spanning at least months...
Or a matter of hours when you are dealing with a colony of giant ants working in perfect coordination. The doors are set into place, the benches and firepit are dug in the common area...
And then the ants begin to flood back out, far more of them than could have possibly left with Foreman that you know of.]
[Except as they file out, the Foremant stops one with red eyes.]