The two men studied the CCTV footage. “There!” One stabbed a finger at the image on the monitor. “Who’s that? Is he one of your staff?”

The man in the image was tall and thin, a hardhat shoved down low on his brow and a white coat worn over a brown pin-striped suit. He leaned forward and peered at an electrical panel through chunky glasses. Shaking his head in reprobation, he pulled a silver instrument from his pocket. A blue light flickered from his hand, stabbing down at the panel. With a satisfied nod, he strolled to the next panel.