As per the station topic, there's the matter of security as well. From what I recall the military had weapons that could disable threats. Are those weapons still present, and if so where are they? They might be useful for whatever's lurking in the portal room, if there is still something there.
Logistically wise, if we're able to find the paperwork the military had before, or whatever they had that was the routine for whenever people showed up we can borrow from that. If there isn't, there'll need to be a way to keep an eye on whatever shows up. I think, until things get smoothed out in that area new arrivals might be at the base for a while. Hopefully, we can find a way to streamline it all within the hours it takes for any reactions to the vaccine to show.