Was just there returning a book for Daisy, though they were still running around. I entered via the side entrance and not through Copley Station, and as I went in a few steps I had several Mutants suddenly appear right next to me, I can only assume they came through the same door, turned into a hell of a fire fight, didn't help when the Turrets and Protectrons fought they'd join in. There are trip wires at both of these entrances.
Yup, I've had Corvega, Bedford Station, USAF satelite station Olivia and Wicked shipping many, many times. You also get rescue quests to the same location and other factions also sending you to the same locations.