The corridor it led to was well illuminated; it must have been on a separate control system. Carla pulled the door shut behind her and hurried down the hallway. A security guard rushed toward her, heading for the door she’d just come through. Giving him her most earnest look, Carla jerked a thumb at the door behind her. "We’ve had a systems crash!" she shouted. "The power is down and we can’t use the telecom system. I’m going to see if I can reboot the lights."