> > "Obviusly this is a concern, given the amount of staff and equipment at [the building]...Can all staff please ensure that all doors are shut."
>
> Hmmm...."mentally unstable but intelligent". Obviously not intelligent enough to use a door handle then? How on earth is pulling a door closed going to stop a psycho getting in?

I'd hate to keep you awake at night wondering about this, so: it wouldn't, ordinarily, but all the relevant doors in this case are opened by access cards or digital combinations. Once they're shut, the general public can't open them.