The job ticket flashed on his tablet:

He followed the dialysis supply line—blue PEX with a certified medical stamp. Clean. Professional. Then, twenty feet later, the blue line stopped. Someone had spliced in a twelve-foot section of —the kind used for standard commercial drains and vents, never for medical water.

Leo Diaz tightened the strap on his hard hat. In the city’s permitting system, a “P2” wasn’t just a routine check. It was a deep-dive investigation triggered by a complaint, a failure, or a tip. Someone inside Mercy had whispered to the code office about water hammer , odd odors , and pressure anomalies on the third floor of the old wing.

Getting there required a ladder, a keycard, and squeezing past ductwork wrapped in old asbestos-label tape (still intact, thank God). Leo clicked on his inspection light. The space smelled of bleach, stale air, and something else: ozone . That meant arcing electricity or a pinhole leak spraying onto a motor.

“No,” Leo said, handing her the tablet to sign. “I’m saving your license and someone’s life. Tell the general he can explain this to the state review board.”

He climbed down the ladder, the echo of 2:17 AM’s water hammer finally silent in his mind. Another P2 closed. Another building made safe—one pipe at a time.

As he typed the final violation code, Leo thought of his first P2, ten years ago: a daycare with a cross-connected boiler feed. Kids had gotten sick. He’d sworn then that no shortcut would slip past his flashlight.