Response Two – Hull Two, in bay two at Launch Spine

⭐ 'It's a machine in pieces in a cold shed and I've had my hands on most of the pieces. It isn't a mystery, it's work' (One Road Out, chapter 6). Nose to the door, aft break and plant to the north end. Drawn as she stood on 6 July: side open, panels off, cabin access panel against the wall.

1. R2-NOSE Nose leg — the drum and the trolley Fr 9–11 published One Road Out, chapter 17 — 'Somebody had put a drum against Response Two's nose leg to stop the trolley rolling, and the trolley had rolled anyway and was against the wall'

   The far end of the bay 'had gone untouched since the Friday Choi called it off' (ch17:37). She stands on her gear like the other one: 'Response One sat on its gear with the access stands folded against the wall' (ch05:111).

2. R2-CAB Cabin — access panel off, against the wall Fr 11–17 published One Road Out, chapter 5 — 'Response Two was in the next bay with its cabin access panel off and standing against the wall'; ch14:185 — 'Response Two stood with its access panel still against the wall and the yellow plugs in'

   ⭐ The panel is against the wall from 17 March to the end: Ortiz 'looked at the panel against the wall' in July when she said what the hull would be afterwards — 'It's not a spacecraft after. It's not a shed with a nose on it either. It's nothing' (ch17:93). What is inside the cabin is never walked; the three seats, the forward port and the sequencer of the crossing are Response One's (ch26:3–23) and are not drawn here.

3. R2-DOCK Docking interface — 'a person and a crate' Fr 17–19 published One Road Out, chapter 14–147 — 'You've got a docking interface on both of those machines and it's the only part of either of them that was designed to make a big thing out of two smaller ones.' 'That interface was designed to pass a person and a crate.'

   Nowak's June plan: bolt the two hulls at the docking interfaces and fly one body. Tandy: 'I can join them so they don't come apart. That isn't the same as making two machines into one machine … It'll bend at the joint' (ch14:161–167). Choi called it off on a Friday (ch17:37). The interface's place on the hull is the drawing's (2026-09-21).

4. R2-AIR Airframe — opened March, stripped June, offcut from 11 July Fr 19–34 published One Road Out, chapter 17 — 'Airframe, opened up in March and stripped in June to fit out the other one. Ducting.'; ch19:439 — 'the original run had been cut out of the loom in March when they stripped this hull for the other one'; ch23:5 — 'Skin and stringer off the second hull, cut into lengths one person could lift, and a note in Choi's hand saying which of it had been inside the plant boundary and which had not'

   ⭐ Rhee's inventory: 'Nine hundred square metres of skin we can cut repair plate out of for twenty years. Four frames … The only vessel here that holds anything above ambient. Sinter stock for the printers past any date anybody's given me' (ch24:43). Stripped for Hull One in two passes — the loom in March, the airframe in June (both quotes above; ruling 2026-09-21). From the eleventh of July the sort floor at the second drying hall 'had been taking the offcut out of bay two as well' (ch23:3). What she carried inside the airframe is never walked; 'the second hull' was 'in pieces' from March (ch09:5).

5. R2-AFT The aft break — conditioning chain, channels A and B, the made-up bracket Fr 34–38 published One Road Out, chapter 19–439 — 'Eli got the panel off the sensing side of the conditioning chain at the aft break … Behind it were the two outlet channels, A and B, and B was his — his bracket, his harness, his four solder joints'; ch19:383 — 'It's the aft break. The drawings are wrong at the aft break, they've been wrong since 2311 and I've been correcting them since May'; ch20:225 — 'Bay two had four lamps on the aft break and the panel off'

   ⭐⭐ WHERE THE SABOTAGE HAPPENED. The switching and conditioning chain behind the plant, with 'a made-up bracket in it that I made up, and there's nobody at the Spine who knows it's made up except me and Nowak' (ch17:251). Eli's return-side work in the quiet: 'the second brace out and back in with a shim under it because the machine was not where the drawing said it was and never had been' (ch19:435). On the night of 6 July he swapped B's compensating resistor for one that 'would read about a fifth high' under a hold (ch19:449–451); the 05:20 run on the 7th tripped at twenty-two seconds; Nowak ran the channels hot and found B 'nineteen per cent over' at minute twenty (ch20:249); on the 8th 'Bracket first. Off, look at the rail, back on … take it to sixty and stop' (ch22:119–123) and the hold ran clean. Eleven pages of corrections, 'every place the drawing lies, and the bracket's got its own page with a photograph of it' (ch19:385).

6. R2-XCH Heat exchanger — the coolant break; propellant faces under yellow plugs Fr 38–41 published One Road Out, chapter 5 — 'the propellant service interfaces open and capped with yellow plugs, and the coolant loop broken at the exchanger'; ch06:233 — 'Nowak was up on the stand at the coolant break with a lamp taped to a bar and her own tool roll open on the wing of the stand, and she had four of the exchanger's studs out and laid on a rag in the order they had come out'

   ⭐ What she needed in May: 'Heat-exchanger gasket set. Both propellant face seals … We can't make a single item on that list, and we couldn't have made it in February either. That's not what terminal black did to us. That's just what a colony is' (ch05:135–139). 'That one you can prove. Put it back together, put pressure in it, and either it holds or it doesn't. Everything else on this machine is an opinion until the whole thing's shut' (ch06:273). Side is the drawing's; the stand (Bergen Limit-STAND) is against it.

7. R2-LOOP Loops and ducting — the loop clamp on the outboard face Fr 38–41 published One Road Out, chapter 6 — 'On this hull that face carries the loop clamp. If you fit yours there, the clamp goes on top of your bracket and the loop goes on crooked, and in six months somebody's chasing a leak that started in a bracket'; ch17:41 — 'the conversion and switching chain behind it, and the loops, and the radiators'

   Nowak's catch on Eli's bracket drawing, April. 'The loops come off the machine, not off the drawings' (ch19:427). Side is the drawing's.

8. R2-PLANT Flight plant — the two pump housings, the coupler Fr 41–49 published One Road Out, chapter 17 — 'It's a flight plant. It lights, and it runs, and it's rated to put this machine off a planet … It's the only one of its class on the ground apart from the one in the other hull, and that one's leaving'; ch17:71 — 'There's a thing bolted into each of those two machines that couples a ship to a road'; ch24:43 — 'Two pump housings that fit the west line, which is the line going single string in September'

   ⭐⭐ THE BET. 'Rated to run standing still?' 'No.' (ch17:49–51). 'So it's a generator with a shell round it.' 'No.' (ch17:63–67) — because of the coupler: 'That one can't make a road. It can only take hold of one that's already there' (ch17:75). 'The ground rig makes the road. Once. It spends the plant out of your hull and it spends the coupler doing it, and there's no object there at the end of it' (ch19:27). Came out of the hull on Sunday 10 July — 'the plant came out of that hull on the Sunday and there were four people on this ground who could read those drawings' (ch22:133) — and went into Terminal Black-RIG. The chambers, the first section and the burn of the crossing are Response One's plant, not this one.

'Bay two was the coldest room at the Spine and they held the review in it, because Ortiz would not do it anywhere else' (One Road Out, chapter 19). 'A roof, a floor and a windbreak, exactly as the establishment sheet described, because on a planet where somebody else managed the weather you sheltered the technician and not the machine' (ch05:109).

1. B2-VDOOR Vehicle door on its rail; the personnel door; the board Fr 1–2 published One Road Out, chapter 5 — 'The small door's a personnel door and it's iced at the bottom edge and if we chip it we're chipping a seal face. We take the vehicle door. It's on a rail, the rail's above the ice line'; ch24:331 — 'The board by the vehicle door still had the eighth of July on it under the older lines'

   ⭐ The survey came in this way in May: 'The vehicle door's forty times the volume. We'll dump the whole bay's air temperature—' 'There's no air temperature. It's been nine weeks' (ch05:99–101). Corporal Aliyev 'had the vehicle door and had had it since one. He had been on the damper handle every cycle since the Saturday' (ch21:149). The board: Ortiz's operating configuration 'up on the board by the vehicle door on the Tuesday morning' (ch24:185); on 22 July Okonjo's people 'took all of that down and put twenty-two pages up in four' (ch24:331).

2. B2-CORR Service corridor — the damper trunk at head height Fr 2–9 published One Road Out, chapter 21 — 'The service corridor ran from bay two to the vehicle door with the damper trunk down one wall of it at head height, so everybody who used it walked stooped on that side out of habit, whether the trunk was low enough to matter or not'

   Where Mae Sutter stood at twenty to three in the morning with her hood down (ch21:127; ch22:107). The corridor board with the holds is outside the pulse space, not here (ch20:3) — see open.

3. B2-STORE Store room behind bay two Fr 9–13 published One Road Out, chapter 22 — 'The store room behind bay two had a door that shut and a shelf at chest height with paint rings on it. Kim had taken it at half four that morning for the door'

   Kim's room on the morning of 8 July; Redding 'had the store room off the corridor booked from half nine' for the statements (ch22:43). Position off the corridor is the drawing's.

4. B2-SHOP The shop bench — the assemblies tagged 17 March Fr 19–34 published One Road Out, chapter 5 — 'On a bench along the wall, in the shop that had been part of the bay and had gone cold with it, were the removed assemblies, laid out and tagged in somebody's careful hand, exactly as they had been laid out on the seventeenth of March'; ch06:269 — 'The bench had the assemblies still laid out on it in the order they had come off, two of them with condensation in them'

   ⭐ 'Condensation's been in these. This one and this one … Not ruined. Not the same as they were' (ch05:129). The review was held at this bench: Navarro 'put her hat on the bench' (ch19:247); Ortiz's crate — the sealed media drum with 'a date on the lid in her own hand', the grey heater pack 'with a strap and a number written on the strap', the split gland seal 'small enough that she set it down in the lee of the drum' (ch19:269–301). The four flat cases of seals — 'This is every seal on the planet' — are on a bench in bay one, the other side of the wall (ch06:289).

5. B2-FLOOR The bay floor — crates, trestles, drums Fr 9–49 published One Road Out, chapter 14 — 'Tandy came out from under the wing of a stand with a rag. Kalb sat on a drum. Nowak stayed standing against the wall with her hands under her arms, because the bay was the temperature the bay always was'; ch22:133 — 'Six feet up the bay, on the far side of the trestle, Eli had the plant drawings for the second hull spread out and weighted with two spanners and a tin'

   Under and round the hull. The trestle with the plant drawings and 'one of Okonjo's people had a stool at the end of the trestle' from 8 July (ch22:133; ch25:309); the crates and trestles Eli walked past to the open panel (ch20:393); lamps under the hull at the review, 'the light going up into the bay through the frames' (ch19:245). From 22 July the manifest is staged here — 'On eleven people, everything on the manifest, everything in bay two' (ch25:65).

6. B2-STAND Bay stands — the stand at the coolant break Fr 38–43 published One Road Out, chapter 6 — 'Nowak was up on the stand at the coolant break with a lamp taped to a bar'; ch17:5 — 'Bay stands, four of them, promised her by Tandy on a Friday in June and not yet moved'

   Four stands. The only thing on the hull Ortiz could have as stock: 'None of the flight parts. You can have the stands.' 'Then I'll have the stands' (ch14:189–191). Drawn against the exchanger (R2-XCH).

7. B2-RIG The rig frame — the plant, the chain and its cabinet, the interface Fr 50–58 published One Road Out, chapter 19 — 'The rig frame stood at the north end, half of it, up on stands, with two of Brannan's plate packs already outdoors and the pipework for them lying on trestles in the order it went together'; ch17:243 — 'The plant. The conversion behind it, the loops, the thing bolted in that couples it. It comes out of Response Two and it goes into a rig at the Spine and at the end of it there's nothing there. Not a hull. Not stock. Nothing that comes back'

   ⭐⭐ THE RIG. Half up on stands at the review; 'the space goes to the rig frame on Monday morning' — 11 July (ch20:173); the plant in it from the Sunday. On 23 July it ran from half past four in the morning 'until you're in or until you turn round' (ch26:243): 'what it was built to do at altitude, on the ground, at ambient, in a shed, with eleven people inside the shed' (ch26:247). Kalb 'at the cabinet' and Sutter 'at the plant' for the 21:26 reading (ch27:37). The bar went onto the studs at 21:31 and 'there's no breaker on this ground that opens that circuit … It goes in and it stays in' (ch27:47). Gone at 22:00 (ch27:389).

8. B2-WALK The walkway — gratings, the cable, the bar Fr 48–58 published One Road Out, chapter 27 — 'Kalb. Off the walkway and go to bed'; ch27:141 — 'Nasser. Get that cable off the walkway before somebody goes over it'; ch27:81 — 'Boots on a grating'

   Fire configuration only. Two men and a bar: 'It's on the studs. Kalb, take up on yours till I say' (ch27:65); 'Both of you together and slow. I don't want it in crooked' (ch27:73); torques ninety-four and ninety-one, read to Redding and put under the hour (ch27:87–97). 'Boots, a lot of them, on more than one grating, and a door, and somebody counting people through it out loud and getting to seven' (ch27:339). Side is the drawing's.

9. B2-DIST Distribution room – Nasser's gauge Fr 13–19 published One Road Out, chapter 27 — 'Plant at band and holding at 21:26, measured at the plant by Sutter and at the distribution room by Nasser, gap under the one per cent. Chain conditioned and at band, measured by Kalb at the cabinet'; ch27:201 — 'He comes off the distribution room to stand at the cabinet and Sutter reads the gap on his own while he's away from it'

   Fire configuration only. Where the draw from South Thermal lands in the bay; position off the corridor is the drawing's. The three gauges of the last signature: plant (Sutter), distribution room (Nasser), cabinet (Kalb).

At grade, drawn below the floor line. 'Launch Spine came up out of the dark as a line of structures with no lights on them, and then as a yard, and then as a very large amount of frozen apron' (One Road Out, chapter 5). The pad, the mast and the flame trench are Response One's and are not drawn.

1. OUT-APRON The apron — four lifters under wraps, the dead ground-power unit Fr 1–8 published One Road Out, chapter 5–85 — 'four utility lifters standing on it under wraps that Tandy had put on with her own hands in March'; 'The apron ground-power unit stood where it had always stood … "Two," he said, reading the number stencilled on the flank. "This is dead."'; ch08:3 — 'The apron had been a store since April'

   'Storage is a box with a number on it. The converter stack is beyond anything we can make and beyond anything we brought down … It's a machine now. It's not a supply' (ch05:87). Tandy took 'the feed-through covers on its avionics cabinet in the size we want' (ch06:281); Kalb 'has got the ground-power cabinet apart on the apron and he's labelling it' (ch09:185). The lifters had stood out here since the Friday 'because on Hart there had never been a reason to build a heated hangar for a machine that sits outside in a climate somebody else is managing' (Terminal Black, chapter 13).

2. OUT-NPAD North pad — the lifter with the weeping bleed union Fr 50–60 published One Road Out, chapter 21 — 'There's a lifter on the north pad with a weep at a bleed union that I found on the Tuesday, and it's on a card with my name on it, and it's still weeping'; ch24:269 — 'Ortiz went down the ladder and out to the north pad, where a lifter had been weeping at a bleed union for a fortnight'

   Ortiz came in off it on the 22nd 'with her coat streaming and a bleed union in a rag in her hand' (ch25:163). Its side of the bay is the drawing's.

3. OUT-REJ Rejection side — plate stations off the dead substations, fans, headers Fr 50–60 fixed spec ruling 2026-09-21 reconciling One Road Out, chapter 17 — 'Ortiz took the six she could have instead, off the dead substations, and knew what they were as she took them. Plate stations built to move high-grade heat across a small gap in a warm hall, going outdoors in the dark to dump low-grade heat' — with ch19:245 — 'two of Brannan's plate packs already outdoors'

   ⭐ Brannan refused block seven's packs — 'These are air. That's all they are and it's all they've ever been' (ch17:125) — so the rejection side is six substation plate stations; the narrator's 'Brannan's' is the type. Two outdoors at the review, pipework on trestles in order. Radiators are why it is outdoors: 'those things down the side are for space … Those were drawn to throw heat into nothing, and you've put air on them and a roof over them, and neither of those was in the drawing' (ch17:53–57). Fire: 'Rejection side at ninety-one and holding with all four fans on it' (ch27:37); 'Second header relief lifted on the rejection side' (ch27:165); 'the second header was gone' (ch27:351). Five glands unpacked and left to leak into drums (ch17:139–149).