He placed the simulation results in the center of the table. Industry absence. I've been working in mechanical systems continuously for 8 years. The physical principles governing combustion resonance don't change based on the credential of the person applying them. The coupling resonance model is either accurate or it isn't my employment history doesn't affect the physics.

He paused. And third risk of modification. The objection characterizes the revised sequence as introducing risk. I would ask the board to weigh that against the documented risk of proceeding with the current sequence which has produced a critical shutdown in 11 of 14 simulations and which deteriorated following the previous modification recommendations. He closed the folder.

We have 16 now 15 days to launch window. The alternative to proceeding with the ground test is proceeding with a propulsion sequence that has demonstrated an 80% failure rate in ground conditions. I'm asking for one test. If it fails, we know immediately and we have time to consider alternatives. If it succeeds, we have a verified solution.

He looked at Miriam Park. The risk of not testing is higher than the risk of testing. Silence. Vale leaned forward. The board should know that Dr.

Reed was separated from Apex Meridian under circumstances that I'm aware of his separation. Miriam Park said, cutting Veil off with a precision that suggested she had been waiting for exactly this move. And I've reviewed the records. She paused and something changed in her expression. Not dramatic, not theatrical, just a quiet recalibration.

The look of someone who has checked a fact that mattered. I've reviewed all of them. Veil went very still. I'd like the board to take a 5-minute recess, Miriam said. The recess lasted 12 minutes.

When they returned, Miriam looked at the board members around her. Four of them. Two nods. One written note passed. Then she looked at Malcolm.

The objection is noted for the record, she said. The ground test is authorized. The room shifted. Malcolm nodded once. Vale picked up his folder and stood.

His chair scraped back harder than was necessary. He walked to the door, stopped, and turned back. When this test fails, he said, "And it will fail because you're trying to solve a hardware problem with a software adjustment based on a theory developed overnight by someone who hasn't been in this industry in a decade. When it fails, I want it clearly on record whose recommendation this was." He left.

Nobody spoke for a moment. Then Daniel from his seat near the wall said quietly. He said when, not if. Yes, Malcolm said. He did.

The ground test was scheduled for the following morning. 10:00 a. m. Malcolm spent the day before it in the lab not changing anything. The sequence was set was set. The modifications were implemented and there was nothing left in the engineering that needed his attention.

What he did instead was sit with Daniel and walk through every assumption in the model. one more time. Not because he thought something was wrong, but because the difference between confidence and arrogance was knowing which one you were feeling. And the way to stay on the right side of that line was to keep checking. At one point during that walkthrough, Daniel found something, a thermal assumption in the preconditioning step. The turbo pump warm-up phase that addressed the cold spot issue that Malcolm had modeled based on standard rotational heat transfer coefficients.

Daniel had pulled the actual measured thermal response data for this specific turbo pump recorded during earlier testing and the real heat transfer rate was 7% lower than the standard coefficient 7%. In a system where the margins were already tight, Malcolm went silent for 90 seconds. Then he recalculated the preconditioning duration. He needed 12 additional seconds of warm-up to achieve the same inlet temperature. 12 seconds that weren't currently in the sequence.

How does adding 12 seconds affect the overall restart timeline? He asked. Daniel checked. It pushes us past the minimum orbit maintenance window for the third restart event. If the mission profile holds, can the mission profile be adjusted?

That's a mission planning question above my pay grade. Malcolm looked at the ceiling. Then he looked at Daniel. Get Rebecca. Rebecca came.

Malcolm explained the issue. Rebecca made a call, one call, standing in the lab with the phone pressed to her ear and spoke to someone at mission planning for 6 minutes. Then she hung up. They can absorb 12 seconds in the coast phase between second and third restart. She said it affects the landing precision by less than a kilometer.

Mission planning says that's within acceptable variance. Malcolm exhaled. Adjust the preconditioning duration. 12 seconds added. Daniel typed.

Anything else? Rebecca asked. No, Malcolm said. Now we wait for tomorrow. The test was at 10:00 a. m. and Malcolm was in the control room at 8:15, which was itself a statement, not of anxiety, but of respect.

You arrived early for the things that mattered. You didn't rush the setup. You gave yourself time to be present. The control room was crowded, more people than it was designed to hold comfortably. Word had moved through the facility in the way Word always moves in a place where everyone shares a stake in a specific outcome.

Not officially, not through announcements, but through the particular human mechanism of people telling one person who tells two others. Engineers who weren't assigned to the test had found reasons to be near the monitoring stations. A group from the structures team was visible through the observation window. Harlon Brooks stood near the back of the control room with his hands in his pockets. Richard Vale was not there.

Malcolm noticed that immediately and then set it aside. Vale's absence was information, not comfort. Daniel was at his workstation. He had his telemetry overlays ready, the three curves that had shown the 14 intersections now configured to display in real time during the test. so everyone in the room would see simultaneously whether the revised sequence produced the same result. At 9:47, Rebecca came to stand beside Malcolm.

"How do you feel?" she asked. "Like someone who has done the calculation correctly and is about to find out if the universe agrees," he said. She almost smiled. "That's either very confident or very honest.

It's both. They're not mutually exclusive." At 10:00 exactly, the test director's voice came through the control room speakers. Control, this is test director Chen. We are go for propulsion ground test 15.

Revised ignition sequence version 2.1. Beginning countdown, t-minus 10 minutes. 10 minutes. Malcolm watched the pre-est systems come online one by one. Chamber pressure nominal.

Turbo pump inlet temperature. The preconditioning phase had been running for 18 minutes and the inlet was exactly where he needed it. Cryogenic feed temperature, feed pressure, control system status, all nominal. He had done this calculation. He had run it through five simulations and one independent verification.

He had checked every assumption twice and found one that needed adjustment and adjusted it. He had spent 36 hours in this building doing the work that the physics required. The physics was either right or it wasn't. T-minus 3 minutes. Daniel looked at him across the room.