The badge binder. A three-ring vinyl binder in the IT security closet, filled with laminated ID cards of employees who had retired, passed away, or simply vanished. Arjun flipped through it. Midway, behind the badge of a woman named “Carol – UML Architect,” was a sticky note.

“The Midwest Power grid controller,” she said, sliding a yellowed printout onto his keyboard. “It’s acting up. The original model is in Rational Rose.”

It was 3:47 PM on a Tuesday when his boss, Marianne, appeared at his cubicle threshold. She wasn’t one for small talk.