6 After about an hour, the worst of the screams and howls seemed to quiet, or maybe Courtney just got used to them. Crux gave her two more granola bars, and she finished off all the liquid in her canteen. It was thicker than water, sweeter too, but not unpleasant to drink. She didn't ask what it was. She'd had enough surprises for one day. Crux was sitting a polite distance away, and for some reason, that made her antsy. She looked at the entrance to the cave and saw something fly quickly in front of it, one dark speck moving across the dark sky, almost impossible to perceive. And the only thing protecting them from it was an invisible piece of technology she didn't understand. That was one thing she could fix. "How does it work?" Crux looked up from where he'd been staring at the fire

