"Build it true, or the metric will simply pass through you without noticing."
From Aletheia: Technical Monograph 01, Tianmen Assembly Authority, 2128
On the fifty-sixth day, with twenty-six left, stood on the high gantry of the assembly hall at Tianmen and watched three thousand six hundred people build the ship that was going to take him back to the Halo.
They moved over her like bees across a brood comb. Seventy metres up, three banners hung side by side in the draught from the sea doors: the Accord's wheat and compass, the Coalition's bronze rings, the Federation's three stars. Nobody had been able to agree on an order for them, so they had been hung in the order the trucks arrived. Under them, Aletheia lay in her cradle with her ribs still showing aft and her skin nearly finished forward, two hundred and ten metres from the blunt prow to the Norfolk engines.
The prow was the thing people stopped to look at. It had no point and no windows. had grown it from the calcified plates of the chimeras and the cell geometry of the Stadium Hive walls, and it rose in a heavy parabola the colour of wet slate, a shape that did not look designed so much as found. To see forward, the crew would use the lanterns or not look at all.
"They are three millimetres high on the dorsal mount," said, arriving beside him with her stylus through her hair. "Federation tolerances. I had to threaten to turn their coolant off."
"Three millimetres over seventy metres of keel is not bad."
"It is if the shield has to seal against it without a gap." She leaned on the rail. Below, a swarm of blunt little robots, cousins of the lanterns, was threading fibre through the port frame. "Kovacs from Puget Sound brought me coffee this morning. Real grounds. He wanted me to let the number six hull rib stay steel."
"Did you?"
"I made him swap it for boron-carbide," said. "Then I drank the coffee."
Down on the floor of the hall, was arguing into a headset with a Federation radio technician, three clipboards under his arm that he was not using. Between them sat the primary Anchor Relay, a brass-jacketed sphere eighty centimetres across in a web of helium lines, the only one of the three that was finished. The second was in pieces on his bench. The third still had a siren's crystal in it, and the siren was still on the roof of the Longwan base, and Bo Han had promised to deal with that personally.
"He told the Federation liaison yesterday that talking by radio near the Halo is like trying to whisper during an artillery barrage with an envelope over your head," said. "The liaison asked him for the maths. drew an envelope."
A crane whistle went. In the open bay under the ship's belly, four riggers were walking a grey shape on a pallet toward the cargo hatch: two point two metres of composite, gold seams, Unit Nine's crossed halberds on the chest. Atlas-0. had spent three weeks stripping it for vacuum.
"The cockpit's still cut to me," said.
"It was cut to you. I'm letting it out at the shoulders." didn't look at him. " has the frame on the manifest. You can argue with her about it. I wouldn't."
"Dr. Neumann."
Voss had come up the gantry stair without a sound. She wore her old Federation flight jacket with the rank pins pulled off, leaving little pale squares in the leather. "Centrifuge three is free for your session. Medical wants to test your inner ear again. I told them you'd be down ten minutes ago."
"I was watching the secondary truss."
"The secondary truss does not have an inner ear," Voss said. "You do. And you are the only person aboard who can read the drift logs faster than the machine can. If you puke in the capsule, I have to clean it. Move."
The centrifuge had been cut into the granite under Pad Four, where the old coastal guns used to be. A white steel arm twenty metres long sat in a pit lined with ribbed rubber, a capsule at one end and lead slabs at the other.
saw the seat and stopped on the gangway.
It was a moulded Kevlar basket with a narrow headrest set slightly too far forward. The Federation fabrication team had saved two weeks by pulling the old Accord drawings off the shared server, and the drawings they had pulled were the Kepler's. He knew the exact place on the left side where the webbing would rub his hip. On the outbound leg 's harness had jammed at the left hip buckle, and she had worked it free with a titanium pry bar while the module tilted eleven degrees, swearing at it in Spanish, and had told him afterwards to stop laughing or she would leave him strapped in.
"Six g for eight minutes," Voss said. She was reading a slate. "Then three minutes of the shaking we recorded at the Sky Gate, so you know what space did there. If your vision tunnels, hit the left toggle. Not the right. The right dumps the seals."
"I remember."
"Good. Do not be heroic. The mission needs your brain. If the brain stops answering, it doesn't fly."
That was the thing she had not said in the last two runs. climbed into the basket. A Coalition corporal drew the harness over his chest and the centre latch clacked home, and he felt it all the way down his spine.
The arm began to turn. Weight arrived first as a nuisance across his knees and then as something with hands on his chest. At four g the numbers on the display went to short smears. At six he stopped noticing anything but breathing.
"Pulse in ten seconds," Voss said in his ear.
The capsule began to shudder on three axes at once, small irregular lurches that pulled his eyes and his inner ear apart. The panel light went from amber to violet. A cold dry feeling came across the roof of his mouth, like iron filings being drawn over it, and for a moment the capsule was not a capsule.
He was on the Kepler's bridge with the stars stretching into rings behind Karim's head, and the thing in the Halo had turned toward them and looked at him the way a granite massif looks at a single drop of rain striking its eastern face: with total, non-negotiable inclusion.
"Neumann. Cross-check."
He did not know how long she had been saying it. The display was tearing at the right edge, characters lifting off it like ash. He found the left toggle with a hand that felt made of wet rope and pressed it.
"Cross-check," he said. "Stabiliser responded."
"Run ended. Decelerating."
The weight went off him a finger at a time. When the hatch opened, Voss was standing on the platform with her sleeves rolled, looking at his hands, which were twitching on his knees.
"You took forty seconds longer to answer me than on your last run."
"The last run didn't have the shaking."
"No. The Halo will have twenty times that." She looked at him steadily. "It will not ask if you are tired."
He swung his legs out. His knees were soft, and he stood up anyway and did not touch the rail while she was watching.
"Am I on the manifest?"
She was already walking. "Shower. Then the briefing room. 's waiting."
The briefing room was a concrete box with a projector hung from a rafter, turning a wireframe of Aletheia slowly against the wall. Gu had left a tin of throat lozenges on the corner of the table before he went back to Longwan to run the ground side, and nobody had moved it. stood against the map wall with her arms folded, a new gauntlet on her left forearm, its seams still dark. had rebuilt it over the summer from the pieces in her workshop. was unpacking three resin jars of dark honeycomb tissue from the Hive's outer ring onto the table.
"They survive the shaking," said happily. "Three rounds in the deep freeze, nearly as cold as space gets, and the tissue tightens instead of breaking. Lay the prow plates so each one covers a third of the next, and the hull will soak up the worst the rupture can throw at it."
"And if the pull reverses?" asked.
"Then we become part of the reef."
"Doctor Hoshino," said. That was all, and put the lids back on the jars.
Voss came in with three folders bound in grey tape and dropped them on the table. "Geneva signed off the crew this morning. Accord gets science: Dr. Neumann, Ms. Rao on the Lanterns, Dr. Hoshino on biology and the prow. Coalition gets the boarding frame and interior security: Colonel . takes the relay. If his link drops, we lose the ground and we fly home by guesswork. I command."
"Bo Han," said.
"Is fit," said. "Which is why he stays. Someone has to hold the gantry if the Circle makes a run at the fuel lines, and Gu will not hold that perimeter without an anchor he trusts." She almost smiled. "Bo Han asked me to pack two crates of dried pork for the transit. He says Federation rations taste of wet plaster."
Voss offered no defence of Federation rations. She tapped the third folder. "The ground relay."
"," said.
"The Coalition Council approved her this morning," said. "She sings from the dish on the headland. carries her up to us."
looked at the photograph clipped to the folder. It was her civil identity card, hair scraped back with an elastic band, no paint, no light rig. She looked about nineteen.
"Did she agree?"
"She requested it." unfolded her arms. "She told the ministry that the children in the Jiangbei shelters look at the Moon every night, and she wants to be the one who tells them what it is."
The projector fan ticked.
"Which leaves the flight deck," Voss said. "Geneva sent me two navy pilots from Diego Garcia. Four hundred hours each in high-g interceptors. Neither has been within five hundred kilometres of a rupture."
"You do not want them," said.
"They fly like soldiers. They think an engine is an argument you win with thrust. Hit rough space and try to muscle the stick and the ship breaks before the valves finish a stroke." Voss slid a loose sheet out from under the folders and turned it to face . Su's academy photograph, a ribbon in her hair, trying not to look frightened. "Yesterday, in my rehearsal, the Gate drifted a hair. She told me my entry angle was three tenths of a degree too steep, because I was correcting for air drag that doesn't exist up there. She worked it in seventeen seconds. She was right."
"She has never left the atmosphere," said. "She has no flight log. If you lose consciousness at the Halo, , the person in that seat is flying everyone aboard."
"I don't care about her flight log. I care that when the numbers wobbled, she didn't reach for a manual." Voss closed the folder.
"She will be terrified," said. "And impossible to shut up."
"Good," Voss said. "A quiet pilot is a pilot who is about to make a mistake. I want her on the flight deck, one reach from the yoke."
looked at Voss for a long moment and then nodded once. realised that he had just watched the two of them have the argument he had been dreading for a week, and that it had taken ninety seconds.
"There is one more," Voss said.
stopped with a lid in her hand.
"," Voss said.
looked at . was looking at the wireframe.
"She isn't military," said. "She isn't any of the three. She's a survivor of Qiao's surgeons."
"She is the only person on this planet whose sense of balance already moves in step with a rupture," said. "When we enter the Halo, the ship's protection will drop out. For six seconds everyone aboard will see their own childhood and hear three kinds of noise. will not."
"She is a person, . Not an instrument."
"She is a volunteer." turned from the wall to face him. "She was at the gate this morning when the transport came in, with her bag packed. She told me that if she stays in Longwan she will spend the rest of her life in a ward answering doctors who want to know if her skin feels cold. She wants to go to the place that made her."
"To find out if she can be undone?"
"To find out if she is alone," said.
The sun went down over the South China Sea and turned the water the colour of an old bruise. walked out along the slipway with his knees still aching from the arm.
At the far end, under the blunt prow, and were sitting on a crate of ceramic tiles. had on a mechanic's overall four sizes too big, the sleeves rolled three times. , in a black sleeveless top with her bob falling over one eye, was tossing steel nuts underarm into an empty primer can five metres away. Each time a nut left her hand the air behind her fingers kept the shape of the throw for a moment, and then the nut rang in the bottom of the can.
Seven for seven.
"You should have goggles on," said to . "The sealant spray carries silica."
" caught the last three before they got to my eyes. She's better than a windscreen."
threw another nut. It rang. "The Atlantic commander walks like she is trying to dent the deck," she said. "And she is afraid."
"We're all afraid, ."
She looked up at him. In the red light her pupils did not quite agree with each other; one had caught the sky and the other was still holding the grey of the bay.
"You are not afraid of dying, Dr. Neumann," she said. "You are afraid of being right."
did not answer. The wind off the water had turned cold.
was looking up at the prow, where four technicians in harness were trowelling the last coat of dark chimera seal along a hatch. "Do you think it will hear us?"
"The rupture?"
"The thing inside." She pushed her hands deeper into the overall's pockets. "The Circle called it the Architect. During the Parade, when the chorus went through the towers, I felt something lean down over the city. Not like a person at a window. Like a cloud that has iron in it. It was so heavy my teeth hurt."
"It's not a god, Min-ji." He sat on the end of the crate. "It's a fracture that's been trying to set for eight years with whatever it could reach. Dust. Satellites. Rock. People caught in the field. When a bone breaks, the body doesn't hate the leg. It lays down bone wherever the stress is worst, and if nobody sets it, it heals crooked."
's ninth nut rang in the can. "And us? What are we?"
"We're the people who have to tell it the bone is crooked."
Behind them the gantry lift clattered against its stops. came out of it at a near run with three orange binders bristling with paper flags, saw , and stopped so suddenly her boots squeaked on the wet paint. The flush went up from her collar to her hair.
"Dr. Neumann." She snapped a salute hard enough to make her fingers tremble. " Voss says I report to you for the third-stage flight plan, and that if I haven't read all your papers on clock drift by midnight she'll have me scrubbing reaction chambers with a toothbrush, and I've read seventeen, and the plan is in the second binder, and I haven't found anything wrong with it yet, but I've only had four hours."
"Officer Su, I'm a civilian. You don't have to salute me on a maintenance tier."
"Yes, sir. Dr. Neumann."
"Have you eaten?"
She looked at him. The question had plainly not occurred to her in some days.
"Go and find in the galley by bay four," said. "Tell him I said to give you the bean-paste buns from the top tray. All of them."
"Yes, Dr. Neumann." She clutched the binders to her chest, turned, and went down the stair two at a time, her boots ringing all the way to the bottom.
came along the slipway with a tin mug of lentil soup and stood blowing on it. "You are terrible to children, ."
"She is twenty-four," said. "When I was twenty-three, I was sitting under cold tube-lights in Geneva, explaining to an Accord tribunal why eleven people didn't come home from the Moon. She's better prepared than I was."
"She has you," said from the crate. She was watching the stairwell where Su had disappeared. "You did not have anyone."
looked east. Past the cranes and the flood dykes the sea was going dark, and somewhere under the haze the Moon was clearing the horizon. He put his hand flat on the ship's skin. It was cold and dense and did not move.
"No," he said. "I was alone."