Did they intend for this to keep working even if they were gone? [He steps into the hallway, but he activates his sword. The blue glow of the sword gives them some better lighting. The holding cells are designed to withstand a beating from within.

He stays where he is until Donnie joins him. His eyes flick from cell to cell.] I wonder, was it the tech here that led to that tower?

[Difficult to say. The silent room has another beyond it, full of more holding cells. Some are broken, the glass wreckage scattered as if something got out. And more husks lay nearby. Some with wet trails. Zero stops, feet planted and looks around.] I can't hear anything yet other than those machines. Can you?