His phone rang at 1:47. The chiller alarm. He was already awake — his body had learned the timing years ago.
He dressed in the dark. Maryam didn’t stir. She’d stopped stirring for these calls around year four.
The truck started on the second try. February cold, the battery he’d been meaning to replace since autumn. He made a note. He was always making notes.
The Complex at two in the morning was a different building. The HVAC ran on night setback, so the air moved slower, which meant you could hear the structure. Pipe expansion in the risers. The sub-basement sump cycling on its float switch. Badge readers clicking through their diagnostic sequence, a sound like someone methodically cracking knuckles down a long hallway.
He badged in at the loading dock. The main entrance was closer but the overnight security contractor always wanted to log the reason for entry, and the reason was that a chiller was failing, and by the time he’d spelled that out the chiller would have tripped on high-head pressure.
The dock lights were on. They shouldn’t have been. The motion sensors reset after thirty minutes of no activity and the last scheduled delivery was at 18:00. Someone had been here in the last half hour.
He noted this.
The mechanical room was in the sub-basement of Building A, down a corridor that smelled the way it had smelled for eleven years: concrete dust, machine oil, old solder. The equipment kept the room warm even in February. The fluorescents took eight seconds to warm up. He’d timed them once. He counted now, out of habit. Eight seconds.
The chiller was CHL-3, the Trane unit on the east loop. He could hear the problem before he opened the panel — a rattle in the compressor housing that meant a bearing was going, not gone. He’d written this up in Q1. Bearing replacement, CHL-3, estimated cost $340 including labor. Deferred. Deferred because the parts budget was running 23% below what he needed, which meant he was triaging, which meant a $340 bearing replacement became a $4,200 compressor rebuild when the bearing finally seized. He knew this. The budget people had spreadsheets.
He pulled the panel cover. Reset the high-pressure cutout. Checked the oil level, the refrigerant charge, the condenser water flow. Everything was in range except the bearing, which had been out of range since January and would continue to be out of range until it failed catastrophically or someone approved the purchase order.
He put the panel cover back on. Tightened the captive screws. The compressor restarted with its usual sound plus the new rattle, which was louder than last month.
While he was down here.
He walked the east loop. The mechanical corridor ran from Building A through the connector beneath the courtyard and into Building B. Here the concrete was older, pre-renovation. You could see where they’d core-drilled for the classified wing in SC+3, the patches in the wall where conduit had been rerouted.
Beneath the east wing the loop should have been dormant — offices empty, equipment off, HVAC in setback. But the supply air temperature was wrong. He put his hand on the duct. Warm. Not hot, not a fire, just warm in a way that meant the system was working harder than the setback schedule demanded.
He’d been tracking this. Since last September the east wing had been pulling 15 to 20% more cooling than its occupancy justified. He’d adjusted the chiller setpoints. He’d initiated energy monitoring. He’d put it in his quarterly report, in the section nobody read, in the careful language that meant: I am telling you something is different and I don’t know what.
Nobody had responded.
The east wing electrical room was locked. His key worked. Inside, someone had installed a second transformer — a 75 kVA dry-type he’d never seen on any drawing. The panel next to it had six new breakers, all live. He closed the door.
The network closet at Room 214 was behind a fire door that was supposed to be secured. It was secured. But through the door’s wired-glass window he could see the new cabling — the runs he hadn’t authorized, the ones he’d written up in his quarterly as an unauthorized modification. Somebody had added more since his last inspection. Four new runs, yellow jacket, single-mode fiber. Single-mode meant distance. The building’s own network was all multimode.
He stood there for a moment. The corridor hummed. Somewhere above him a toilet flushed — the overnight security guard, probably, or whoever had triggered the loading dock lights. Last month someone in a program he didn’t have clearance to know about had sent a polite email — not through facilities, directly to him — requesting a temperature adjustment in the east wing. He’d made the adjustment. When he went to log the work order, there was no cost center to file it under.
He walked back to the mechanical room. Turned off the fluorescents.
The truck started on the first try this time. Warmer now. On the drive home he thought about the district meet on Saturday. Keisha in the 400 meters — she had a tendency to go out too fast in the first 200, but her kick was getting stronger. He’d talk to her about pacing. He’d still replace the battery this weekend, if the auto parts store had the right size. If they didn’t, he’d make a note.