I didn't see who had done it, but I have the script and symbols I could see memorized. It was large, large enough to cover a large portion of this prison.
I remember it got cold when I was near it, and the outer perimeter was searing hot. It felt as though it was pulling all of my energy out of me. I was trying to get back to headquarters when I suppose I passed out. [He's still a bit wobbly, but he'll be okay.]