This might take a bit of explanation.
For the game I'm currently GM'ing on a different forum, one of the upcoming events involves an interuniversal trip to the universe that the Foundation inhabits, Site 19 in particular, to retreive a piece of an ancient superweapon that has been identified as an SCP (it's not an actual canon one, just so you know). The thing is, due to the actions of a group of malevolent space-gods (roll with me here), every lock, door, hatch, and containment field is now wide open, and most of the researchers and security personnel have been overwhelmed and slaughtered. In essence, the heroes are going to have to escape several hundred monsters trying to kill them while at the same time trying to do battle with a rival group of antagonists, while Site 19 goes to hell in a handbasket.
Anyways, there are a couple questions I have just to make sure that I stick as close as possible to the nebulous canon of the Foundation:
What is contained at Site-19, besides the classics like 173 and 682 (namely, which SCPs would be good fodder for a boss battle)?
What steps would the Foundation take if such an event happened? I'm thinking a nuclear bomb, but that might be overkill- or not enough, as the case may be.