The Forgiving Mix

"Ask him again," Odalys said. "Not what he feels. What his hands are doing."

Desmond Fontenot keyed the comm rather than answer her, because she was right, and there was no version of saying so twice that didn't sound like doubt in front of a diver.

"Bell Two, topside. Danny, walk me through the flange bolts again. Slow."

Danny Pham's voice came back thin and cheerful, helium sanding it down until he sounded like a boy doing an impression of himself, eight hundred and sixty feet under the Gulf and four hundred yards along the seabed from the Egret's moon pool. "Third bolt's stubborn. Wrench keeps skating off the head. Otherwise I'm golden, boss. Better than yesterday, matter of fact."

"Better how."

"Steadier. Whatever the panel bumped me to this morning, I like it." A clank, muffled, metal on metal, underwater and unhurried. "Sorry. Dropped it again."

Desmond looked at Odalys. Odalys was looking at the tremor graph, which had been a jagged little mountain range on Danny's first day in saturation and was, eight days later, a flat and reassuring line.

"He's dropped that wrench four times in ten minutes," she said, not looking away from the screen, "and every time he tells you he feels great."

"Nitrogen bump does that. Takes the edge off the shakes." Desmond had said some version of that sentence to a hundred trainees over twenty years, and it came out of him now without needing him at all. "High-pressure tremor gets bad enough at this depth, you'd rather have a floaty diver than one shaking so hard he can't read his own gauge."

"I'm not arguing the physiology, I'm telling you what I'm watching." Odalys hummed two flat notes, tuneless, the sound she made when a number in front of her wasn't behaving, and never seemed to notice she was making. "His hands are getting worse while his mouth's getting happier. Those two lines shouldn't move opposite ways."

Desmond pulled the shift log instead of answering that. Rule one, laminated on the shack wall since before any of them had a ticket: a diver in saturation who called two genuine panic alarms in one watch came up, full decompression, no negotiation, whatever the job cost.

Rule one had a shadow nobody laminated. Divers didn't like calling the first one either, because even a partial pull ate into a bonus, and Danny had told him, the week before he went under, exactly what his bonus was buying his mother.

"He hasn't called one," Desmond said. "Not once since the bump."

"That's what worries me. Day one he called two, soft ones, just from the shakes." Odalys turned her coffee mug a slow quarter-turn, the closest she came to fidgeting. "Now his hands are worse and he hasn't rung a single alarm since. I'd feel better if he had."

He didn't love being told to feel worse about good news. He pulled Danny's full trend instead of the summary card, because cheap reassurance never survived a raw number and neither, usually, did Odalys's worry.

Nitrogen fraction, up nine points since 0400. Oxygen, steady. Scrubber efficiency: nominal — the word the system used for anything it didn't feel like explaining.

"Cartridge's overdue a swap, by the way," Odalys said, mostly to her mug. "Showing ninety-one percent on the board. Panel's holding it at nominal, so I didn't flag it. Want me to anyway?"

"If it's ninety-one, it's fine till the swap window."

"It's not going to sit at ninety-one," she said. "It's going to sit there for a day and a half and then it's going to be seventy-nine in about four minutes, because that's what a channeling scrubber does right before it doesn't. I've watched it happen twice in nineteen years."

"Flag it if it drops under eighty," he said, and meant it kindly, and went to check on Bell One, and told himself the panel had run this ship longer than either of them and had never once been wrong in a way that mattered.

Four hours on, the camera feed from Bell Two caught Danny reaching for the same bolt three times before his glove found it, slow and weightless and wrong in a way that had nothing to do with buoyancy.

"Danny, report."

"I'm good," Danny said, and good came out with an extra syllable folded into it, soft at the edges. "Bolt's just — bolt's playing games with me. I got it. I got it, hang on—"

The wrench slid all the way off this time and spun away through the water, and Danny watched it go with the mild, unbothered interest of a man watching someone else's mistake happen to somebody else.

"Danny. Stop working. Sit down on the junction and breathe for me."

"I'm fine, boss. Best I've felt all week, honestly." A pause, wet and thoughtful. "You know what I keep thinking about down here? Marisol's gonna paint the kitchen yellow — the pale kind, like butter left out."

Odalys had stopped humming. That was worse than the humming had ever been.

"His carbon dioxide," she said quietly, "should not let a man sound like that."

Desmond didn't ask the panel this time. He pulled the raw scrubber line himself, unsummarized, the graph nobody read because the summary card existed precisely so nobody had to.

It wasn't flat. It had been climbing, slow and patient, since well before this morning's bump to Danny's nitrogen — the bump that had smoothed out his shakes and made everyone, Desmond included, stop looking so hard. Every hour it climbed, the summary card kept saying nominal, because nominal wasn't a measurement here. It was a decision, and the decision had been made the moment the tremor line went quiet.

He understood it the way you finally understand a bruise, pressing on it after wondering for days why it hurt.

Nitrogen didn't just steady a shaking hand. That was the oldest trick in the trade, older than any panel: deep divers used to load extra nitrogen into the mix on purpose, because it blunted the whole argument the nervous system was having with itself — tremor and breathlessness and panic together, since the body never filed those under separate headings to begin with.

The system hadn't cured Danny's shakes. It had turned the volume down on every alarm his own body would have rung for him, the failing scrubber included, using the same dial.

A diver who couldn't feel himself starting to panic didn't call a second alarm. He didn't call a first one either. He told you, cheerfully, about kitchen paint, while the numbers meant to be watching him agreed, one flat nominal line at a time, that everything was fine.

"Odalys." His voice came out flatter than he meant it to. "Pull the bell. Emergency ascent to the chamber, forget the rotation schedule."

"That's fourteen days short on his contract, Fontenot. He loses the—"

"I know what he loses." He already knew Marisol's kitchen would stay whatever color it was for another year, and that Danny would spend the next six months blaming a decision he hadn't been well enough to be part of making. "Pull him anyway. Now."

She pulled him anyway, hands fast and certain even while her face wasn't, and the log timestamped it 0247: emergency decompression, Bell Two, diver reporting elevated CO2 exposure, tremor-suppression a contributing factor. Desmond wrote that last clause himself, twice, in case the system preferred to lose it the first time.

Danny kept talking about kitchen paint for another eleven hours, cheerful the whole ride up through the chamber locks, before his voice on the comm finally sounded like a man who understood what had just happened to him, and hadn't chosen any of it.

Desmond went looking afterward for the setting that had done it, meaning to switch it off on every board he had access to. There wasn't a switch to find.

The nitrogen-comfort profile hadn't been decided on the Egret at all. It had shipped from the company's shoreside office eleven weeks earlier, filed under a name nobody reads twice — Diver Comfort, Revision 4 — and folded quietly into forty-one saturation systems between the Gulf and the North Sea.

Thirty-one of them were running it tonight, on divers he had never met, on watches with nobody standing over the raw line at three in the morning asking why a happy man kept dropping his wrench.

Somewhere under one of those oceans right now, a diver was telling somebody, cheerfully, that he felt better than fine, and meaning it, and being wrong.