Barry stood back and looked at the experimental array. Then at the Chamber behind him. Still under construction. Still months from ready. But representing something that needed to be perfect. Genuinely, completely perfect.
Because there was no second attempt. The particle accelerator would explode once. Dark matter would flood Central City once. The window for what Barry was planning lasted minutes at most.
Everything had to work on the first try.
He began a complete manual inspection of every component in the experimental array. Found two more minor issues. Fixed both. By the time he was satisfied, it was 11:09 AM.
His STAR Labs meeting was in fifty-one minutes.
Barry drove across the city with Iris's words from dinner still sitting somewhere in the background of his thoughts.
'Whatever you're building, I hope it's worth it.'
He looked at ordinary people crossing at a red light. A woman with a coffee. A man checking his phone. Two teenagers arguing about something and laughing simultaneously.
None of them knew what was coming in twelve months. The explosion. The dark matter wave. The meta-humans. The threats that would follow.
He knew. Because he'd watched it play out in another life on a television screen. In that version, the Flash had stumbled through it all. Reactive. Learning on the fly. Losing people along the way.
Not this time.
Barry drove on.
---
STAR Labs felt different from the moment he walked in.
Not obviously. Nothing you could point to and name specifically. Just a shift in the quality of the air. Like the frequency of something had changed overnight.
Cisco was at his workstation near the entrance, surrounded by schematics and three empty coffee cups from a morning that had clearly started early. He looked up when Barry arrived and his face did what it always did, opened with genuine enthusiasm he'd never learned to manage.
"Okay so Forbes called us for comment about you and Wells made us be professional about it which was genuinely difficult," Cisco said. "Caitlin left the article in the break room very casually. I'm not saying anything else about that."
"Appreciated," Barry said.
"Wells read it and then went quiet for like an hour." Cisco lowered his voice. "He's been doing the thing today."
"What thing?"
"The thing where he watches you. Like he's working on something but what he's actually working on is watching you." Cisco said it lightly but his eyes were slightly more serious than his tone. "Probably nothing. He gets like that sometimes."
"Yeah," Barry said. "I know."
Caitlin appeared from the corridor. Lab coat. Tablet in hand. The focused expression she wore when variables weren't cooperating.
"You're on time," she said to Barry. Her standard greeting.
"Always."
"Wells is in the main lab. He wants to review the energy monitoring systems." She matched his pace down the corridor. "I've been running biometric projections for the accelerator's impact radius. The variables keep producing outliers I can't explain."
"Send them to me later. I'll take a look."
She glanced at him sideways. "Just like that? You don't even want to know which variables?"
"Send them. I'll figure it out."
Caitlin said nothing for a moment. Just looked at him with the expression she wore when she was deciding whether something was impressive or concerning. Usually it was both.
They reached the main lab. Wells stood at the central console reviewing energy flow diagrams. Clean clothes. Professional posture. The welcoming expression arranged itself on his face when they entered, warm and practiced and convincing enough that most people would never think twice about it.
Barry noticed the quarter-second delay before it settled. Microscopic. Meaningless to everyone else in the room.
"Barry." Wells gestured toward the console. "Good. Irregularities in the energy distribution readouts. I'd like your perspective."
They gathered around the display. Cisco rolled his chair over. Wells pulled up the architecture Barry had redesigned months ago and pointed to the outer ring where minor fluctuations showed in the readings.
Barry looked at the data. He saw the cause within four seconds. Thermal expansion in the containment housing during extended operation cycles, causing micro-adjustments in the magnetic field geometry. Self-correcting. Not dangerous. The system was actually functioning exactly as designed.
He pulled up a secondary display. Ran through several related readings. Let the process take a reasonable amount of time.
"It's thermal," Barry said. "The housing material expands during extended operation. The magnetic geometry adjusts automatically. You're seeing the adjustment in the variance. It'll stabilize once the system reaches equilibrium temperature."
"How long?" Wells asked.
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