[johndallman]

Originally Posted by Icelander

I did some Googling and checked what happened to people who had flashbangs go off too close to them. Several tactical operators died on the scene when their flashbangs exploded in contact with them, about 50% of the sample of 7-9 in news reports I could find. I couldn't find a report where the injuries were minor...

Telekinesis is deadly around grenades.

A realisation that the PCs have presumably already had, but took me until now:

Spoiler:  

Given the "freak", the "minotaur", and the other weirdness around the asylum, there are either other survivors of Jade Serenity around, or people who were subjected to similar treatments when it was a DoD unethical experiments facility.