The Light That Remains: Pressure Seal

The impact lands at 0200, three seconds before the dorsal plating starts to scream.

Not ring. Not the soft, measured chime that colony stations use to flag a pressure variance or a routine hull fatigue check. The sound that punches through the outer shell and up the station's spine is something older and worse, a grinding, dragging noise like metal being pulled apart by teeth. Dax Thorne feels it through the soles of his boots before it reaches his ears, a shudder that ripples up through the breach corridor floor and into his sternum, and his knees buckle a half-inch before the reflexes from years of rigging rescue lines on storm-swamped rooftops kick in. He drops to one knee, braces both palms against the bulkhead, and the metal is already moving under his hands.

He is already sealed in the suit. He has been sealed in it for eleven minutes, since the secondary pressure warning pinged on his wrist monitor and he stopped pretending the spike was a false positive. The suit is two sizes too large, a loaner from the engineering bay, and the forearm gash is bleeding through the thermal layer. A loose panel, dislodged by the initial shudder, took him across the left arm at a speed that still makes the hair on the inside of his wrist prickle whenever he thinks about it. The cut is ugly, ragged, four inches long and deeper than it looks. A pressure bandage is wrapped tight, but the blood beads slow and dark, soaking the inner liner and making the fabric stiff, a dry, cracked sheet of plastic against the raw skin beneath. He will deal with it in a moment. Right now the moment belongs to the bulkhead.

The decompression is already eating into it.

He can hear the welds popping, one by one, a rapid staccato of tiny, furious gunshots that travel up the lattice structure and into the floor plates. The bulkhead separating the breach corridor from the main habitat ring is bowing outward, a slow, obscene stretch, and where the metal parts the air does not simply escape. It howls. A sustained, ragged scream of atmosphere tearing free, and the temperature in the corridor drops so fast that Dax watches his own breath ghost out of the suit's neck seal in pale, curling clouds. The amber emergency lights stutter overhead, flickering between a sick yellow and a flat, boneless white, and the smell of ionized air and melted polymer is sharp enough to sting through the suit's ventilation, a chemical burn at the back of his throat.

He presses both palms flat against the bulging metal and pushes. The suit's servo-assist is at seven percent charge, a whisper of hydraulic pressure behind his shoulders, and it is not enough. The bulkhead shoves back. The floor plates vibrate at a frequency that makes his molars ache, a low, grinding hum that lives in the jaw and the sinuses rather than the ears. Somewhere behind him the corridor lights die completely, and in the dark the shriek of tearing metal is the only sound, a sound so high and sustained that it feels less like noise and more like a hand pressed against the inside of his skull, pushing.

"Breach corridor, seven," he says into the comm. His voice is rough, flat, stripped of anything that could be called panic. "Bulkhead's at forty percent integrity and dropping. I need a weld team on my six in ninety seconds or this whole section goes to vacuum."

The comm crackles. A voice, clipped and bureaucratic, the flat drone of someone reading from a routing table. "Acknowledged, Thorne. Engineering is routing a repair team to the east corridor. Estimated arrival is fourteen minutes."

Fourteen minutes. Dax laughs, a short bark that has no humor in it, and he feels the gash on his forearm pull tight with the movement. "I'm in the west breach, you numbskull. East corridor is three rings away and runs straight through the main ring, which is where the dorsal plating just took a direct hit. You routing them through the worst part of the station."

Silence on the comm. Then, quieter, the clip gone: "Routing is being recalculated. Stand by."

He slams his palm against the bulkhead again, feeling the metal flex and groan under the weight of his hand. "I can stand by for about sixty more seconds."

The shriek rises another register. The amber light stutters, dies, comes back, and in that half-second of blackness Dax sees the fracture line spread, a jagged white thread of failure crawling from the upper left down toward the lower right, splitting the plating like a crack in a windshield that has been hit by a stone. Where the thread reaches the edge, the metal parts and a jet of white vapor hisses out, carrying the sound of a thousand small things popping and releasing. He pulls his hands back. The suit's servo whines, resists, the pressure differential trying to rip the sealed suit off his body like a skin being peeled in a single, brutal stroke. He locks his boots against the floor plate, plants his feet, and the suit holds. Barely.

Through the comm, a new voice. Female, measured, carrying the kind of calm that is not calm at all but discipline dressed in a calm voice. "Dax."

Maren Ashford. She is not in the corridor. She is not in the east section or the west section or anywhere the comm routing would logically place her at this hour. She is simply on the frequency, and the way she says his name is the way she says it when she is about to be very, very firm about something, when the sardonic warmth in her voice has gone quiet and the load-bearing architecture underneath has shifted into place.

"I see the fracture pattern on the structural monitor," she continues. Her voice is warm, but the warmth is a surface thing, a skin over the hard, methodical engine underneath. "You are at Breach Seven. The dorsal impact is Sector Four, which means the decompression path is cutting toward the habitat ring in about, give or take, two minutes. Are you clear of the main corridor?"

"I'm in the corridor, Maren."

"No. You are in the breach section. The main corridor is beyond the bulkhead you are currently holding with your hands and your particular brand of stubbornness." A pause, short and deliberate. "How much integrity do you have left?"

"Thirty. Maybe twenty-five. The fracture line's moving fast."

"You have one."

"One what?"

"One chance to get to the pressurized side. The bulkhead is not going to hold long enough for a repair team to arrive. If you are still on the wrong side when it gives, you are in vacuum. I do not say that to frighten you. I say it because you need to move."

Dax looks down the corridor. The breach stretches ahead, the amber lights pulsing, the floor littered with torn panels and the shredded remains of conduit, thick cables dragging across the plates like severed nerves. The bulkhead is behind him, still screaming, still failing, and the pressurized side is ahead, through the corridor, to the main ring, to the sealed hatch that Maren's structural monitor shows as intact, as still holding, as still a door between the living and the dead.

He runs.

The corridor narrows. Dax's boots screech on the perforated grating, and the sound is wrong, too thin, like the metal has lost its patience with him. Debris skitters ahead of his knees, little panels and conduit fragments bouncing in the amber emergency light. The air tastes of copper and ozone, thick and sweet in a way that means something in the hull is shorting out and cooking. His hands are bleeding. Both of them. The left worse, where a torn cable had snagged the webbing between his fingers and pulled, and now the gap is deep enough to show the white ridge of bone and the slow, steady bead of blood pooling in his palm.

He does not stop. He can not stop.

The breach is four meters ahead. The sound has shifted from a howl to a pressure, a physical force pushing against his eardrums, against the fluid in his spine, against the inside of his teeth. The corridor walls flex inward with each pulse, the plating bowing like a drum skin about to rupture.

Two decks up and one bay to starboard, in the sensor room that should not exist this close to the breach, Maren Ashford presses her shoulder against the viewport and watches the glass crack.

It starts at the lower left corner, a single hairline fracture that catches the amber light and throws it in a thin, bright shard across her field notes. Then another. Then a web of them, spreading outward from the impact point where the pressure differential has been hammering the window for the better part of a minute. The glass sings as it fails. A thin, reedy note, almost musical, and Maren tilts her head and listens to it the way she once listened to the harmonic resonance of a deep-sea tube worm's mantle cavity. Methodical. Patient. The glass will not hold. She knows the physics. She has known it since the first micro-fracture appeared at 0347, forty-three minutes ago, when Dax was still arguing with the structural monitor over whether the dorsal impact would reach the habitat ring or not.

It reached the habitat ring. It reached everything. And now the glass is a web of white lines over the dark, and behind that dark, the corridor is visible, and in the corridor, a man is running with a welding torch strapped to his back and no suit on and blood running down his forearms in two bright, steady rivulets.

"Dax." Her voice comes through the comm channel, and she keeps it level, keeps the warmth in it. A surface thing. A skin over the engine. "You are at the breach now. I am reading your thermal signature through the viewport. You are bleeding out. I need you to tell me your vitals or I am going to be very upset with you."

"I'm good." The words come fast, drawn, the "t" in "good" swallowed into the "d" of his Gulf drawl. He is talking while he is moving, which means he is not thinking, which means he is in the good zone, the adrenal zone where the body handles the pain on autopilot and the mind just picks up the pieces. "Just a little, uh, cosmetic stuff. Left hand's a goer. Right hand's, uh, decorative."

"The left hand is not decorative. I can see the fracture pattern on the conduit that hit you. You have a clean laceration down to the extensor tendons. You may not be able to form a grip with your dominant hand for the next three hours." A pause. The glass cracks again, wider this time, a spider's leg of a fracture that runs from the center of the viewport toward the upper right corner. Maren watches it grow. She does not look away. "You have the torch."

"I got the torch."

"It is a plasma-arc unit. Industrial grade. You are not an industrial welder. You are a rescue diver who, in my professional opinion, has the fine motor control of a concussed toddler."

"I've been fixing boat hulls since I was fourteen, Maren."

"Yes. With a sputter stick and a prayer. This is a plasma-arc unit rated for titanium-alloy plating at depth. The thermal output is different. The fume profile is different. The margin for error is." She stops. The glass fractures again. A chunk of the center pane pops free and tumbles onto her workbench, shattering into glass dust that catches the light like a tiny, frozen storm. "You have eleven minutes. I am counting them. I am going to count them out loud, and if you miss the window, I am going to be very loud about it."

"You don't have to narrate the whole thing."

"I do."

She starts counting. Her voice is steady, warm, absurdly calm for a woman with her glass shattering and her entire operational picture degrading in real time. "Minute one. You are at the breach. The plating is what? Two-fifths? I am reading the fracture map on the secondary monitor. The impact zone is roughly a three-meter diameter oval, and the plating has delaminated on the inner face. You will need to fuse the inner plate back to the outer shell. You will need to run a bead along the perimeter and then cross-hatch the center. Do not try to patch it. You will not have the material. You will weld what is there back to itself."

"I see it." His voice is flat. The flat of a man who has stopped narrating his own survival and is just doing the work. The torch comes off his back. The plasma-arc head hisses to life, a sharp, acidic smell of ionized gas that would be sickening in a closed space, except the corridor is not closed anymore, and the smell is just the smell of the void pressing in, of the cold that is waiting on the other side of two millimeters of titanium. "Starting the perimeter. Give me the thermal read on the delam."

"The delamination is worst on the port side. The fracture line runs parallel to the primary axis, so your bead needs to be heavier there. You are going to get a lot of spatter. The suit is off, which means the spatter is going to land on your skin, and I need you to keep your eyes open."

"They're open."

"The plasma-arc is going to blind you for six to eight seconds after you stop a bead. Your pupils will not recover in time to see the spatter pattern before you start the next pass. You are going to have to count. Count your seconds."

"I know how to count, Maren."

"You count like a man who has forgotten the difference between five and six. I have watched you count a depth gauge in the dark. It is not a gift."

The torch ignites with a sound like a held breath released through a steel pipe. The light is not light. It is a wound in the darkness, a blue-white star the size of a thumbnail that throws everything else into shadow and screeches. Dax moves into the breach, and the heat hits him first, a wall of it, not the warm heat of a kiln but the hot, sharp heat of the void's absence, the heat of a pressure differential trying to equalize by force. The plating in front of him is buckled, torn, the inner face peeled back from the outer shell like the skin of a fruit gone bad. He sets the torch head against the perimeter and pulls the trigger.

The sound is wrong. He has welded before, on the deck of a trawler in the Gulf, in the rain, with his hands shaking and the metal cold. This is different. The plasma-arc does not sing like a sputter stick. It roars, a deep, guttural howl that vibrates in his molars, in the base of his skull, in the small bones of his inner ear. The spatter throws off in a cone, bright orange beads of molten titanium that hiss and freeze on the grating around him, and he watches them fall, watches them cool, and does not flinch. The suit is off. He told himself that was because the suit would have been in the way, because the helmet's visor would have distorted the spatter pattern and he would have been flying blind. He told himself a lot of things. The truth was simpler. The truth was that he had been moving too fast to put it on, and then it was too late to stop, and the cold had been calling to him the whole way down the corridor, and he had been walking toward it because that is what he does, that is what the Gulf did to him, you walk toward the thing that is going to kill you because the alternative is standing still, and standing still is worse.

"Minute two. Perimeter bead is seventy percent. You are drifting on the port side. Correct left. By two centimeters."

"Got it." The arc hisses. The spatter catches his forearm, and the sound it makes against his bare skin is a sharp, sizzling pop, like a fat drop of grease on a cast-iron skillet. He does not look down. He does not stop.

"Minute three. The delamination is holding. You are buying time. Do not let it fool you. The outer shell is still under load. The moment you stop welding, the pressure is going to try to push the two plates apart again. You have to run the cross-hatch before you can stand up."

The cross-hatch is slower. He has to be precise, and his hands are shaking, and the shaking is not from the cold. It is from the torch. The vibration in his palms is a low, constant buzz, and the spatter has landed on his thighs, on his collar, on the side of his jaw, and the tiny burns are opening and closing like little mouths, and the smell is acrid, the smell of his own hair curling at the edges. The heat is visible now, rolling down the corridor in slow, undulating waves, the air shimmering above the plating like the surface of a summer road. Through the sensor room window two decks up, Maren watches the waves and watches the man in them and does not blink, because blinking would mean the glass, and the glass is already a mess, and she is holding it in place with her shoulder and the heat of it pressing against the back of her neck.

"Minute five. You are halfway through the cross-hatch. The delam is sealing on the port quarter. The starboard quarter is still open. You have got six minutes left."

"I got five," Dax says. "You're counting slow."

"I am counting accurate."

"Five minutes, Maren. I don't need the encouragement."

"Minute six. The starboard quarter is the critical section. The fracture line is longer there. You will need a heavier bead. Drop your amperage by ten percent and slow your travel speed. If you push through it at full power, you are going to burn through the outer shell and you are going to lose the structural ring."

The torch roars again. The spatter throws wider. Dax drops the amperage, feels the arc pull back, the light dimming from a wound to a bright, angry eye. He slows his hand. The beads of molten titanium land heavier, slower, each one a small, bright star that freezes into a dark, metallic scar on the plating. The heat is in his face now, not a wall but a breath, hot and steady, and the cold is still there, still pressing, still waiting on the other side of the delaminated gap, and he can feel it on the back of his neck through the thin fabric of his shirt.

"Minute seven. You are bleeding through the cross-hatch. I can see the void through the gap. It is dark and it is wide and it is not going to close if you stop."

"I'm not stopped."

"Minute eight."

The last two beads. The cross-hatch is done, the X-pattern complete, the inner plate welded back to the outer shell in a lattice of bright, cooling scars. Dax releases the trigger. The torch hisses to a simmer, then a whisper, then silence. The corridor is quiet, and the quiet is the worst part, because the quiet means the pressure differential has dropped below the threshold where the plating is still being pushed, and it means the two millimeters of titanium between him and the void are now the only thing that exists. The heat is dying. The waves are thinning, rolling out in pale, reluctant pulses. And the cold is coming in. Not the cold of the Gulf in February, which he knows, which he has had time to build a vocabulary for. This is the cold of a place where nothing lives. The cold of a number that has no name.

He stands up. He lets the torch slide down his arm, coiled and cooling, the head ticking as it shrinks. He is still wearing the helmet. It is on his back, strapped over his shoulder, and he has not put it on. He has not closed it. He does not know why. Maybe because the visor would have been fogged by the welding, and he would not have seen the last two beads. Maybe because the cold is more honest than the lens. Maybe because he is Dax Thorne, and he does not do things in order, and the helmet was step one and he skipped it and is only now, eleven minutes later, realizing that the thing on his back is the only barrier between his face and the cold that has been breathing on him for the last ninety seconds.

He turns. The cold hits him in the chest first, a physical impact, like walking into a wall made of ice. His breath stops. Not a held breath. A stopped one. The air in his lungs goes still, and the stillness is not a pause, it is the absence of movement, the absence of the exchange, and the cold is in his throat and in the back of his eyes and in the gap in his left hand where the bone is showing through the torn skin. He stumbles. One step. Two. The boots drag on the grating, and the grating is cold, colder than the air, colder than anything, and the floor is tilting, the amber lights stretching into long, pale streaks.

His hand comes up. Catches the plating. The plating is the weld. The weld is the seal. He grips it, and the grip is the left hand, the torn hand, the hand with the bone showing and the tendons shredded, and he grips it and the fingers close and do not let go, and the cold is in the fingers now, is in the gaps, is climbing up the arm, and he is not stumbling anymore. He is holding. He is holding the seal with a hand that should not work, in a corridor that should not exist, two millimeters of titanium between him and a cold that has no name.

"Minute eleven," Maren says, through the comm, through the glass that is holding by the hairline of a dozen fractures, through the shoulder that is pressing against it and the heat that is pressing against the back of her neck. "Seal is confirmed. Pressure differential is dropping. The habitat ring is intact. You are, Dax Thorne, eleven minutes and four seconds into a very long conversation with physics, and you have won."

He does not answer. His hand is on the plating. The plating is warm. The cold is still there, behind his eyes, in the stopped breath, in the gaps in the skin that are filling, slowly, with a numbness that is not cold. It is just the absence of cold. It is the thing that comes after.

The helmet is still on his back. He will not put it on. He will stand here, in the corridor, in the quiet, in the warm, and he will not put it on, and the cold will stay behind the two millimeters, and he will hold the seal, and he will not close the helmet, and the glass in the sensor room will hold, and Maren will not move her shoulder, and the eleven minutes will be eleven minutes, and nothing else.

The amber lights pulse. The corridor breathes. And in the sensor room, the glass cracks one more time, a single new line, thin as a whisper, running from the upper left corner toward the center, and Maren Ashford watches it go, and does not blink, and does not move, and the count stops at eleven, and the seal holds, and the cold does not come in, and the glass does not fall, and the room does not go dark, and the two of them are still alive, and the cold is still out there, and the helmet is still on his back, and he does not close it.

The amber lights cycled to white, and the corridor exhaled.

Maren heard it before she saw it: the small, wet sound of thread being pulled through skin, the faint percussion of a needle slipping between muscle and tendon, the creak of the med bay door settling on its rail. She stopped in the hallway with her shoulder still aching, her neck still warm where the heat of the seal had pressed against her, and for three seconds she simply stood there, breathing the antiseptic smell that bled under the door crack. Rubbing alcohol. Iodine. The copper tang of blood that had no time to cool.

Then she pushed the door open.

Dax Thorne was sitting on the edge of the surgical table, legs dangling, his left forearm propped across his knee. His right hand held a curved needle on a thread of catgut, and his left hand, the one that was wounded, held the skin open with a pair of forceps, steady as a surgeon's. The gash ran from just below the elbow to the wrist. Not deep enough to take a tendon. Deep enough that the meat of the muscle sat pink and glistening beneath the split dermis. He was working the suture in slow, deliberate passes. One. Two. Three. The thread pulled tight, and he clipped it with the small scissors resting on his thigh. No bleeding. No shaking. Just the wet click of the forceps releasing, the soft snip of the cut, and the rhythm of his breathing, which was not steady at all.

He did not look up.

Maren set the gauze on the counter behind him. The pad of it made a small, dry whisper against the steel. She watched it land. Watched his fingers tighten on the forceps for a half second before they relaxed back into their work.

"Dax."

"Mm."

"You need me to hold the skin."

"Mm."

"Your hands are going to cramp. I can do the next two stitches, you just keep the needle path."

He cut another length of thread. The scissors snipped. He tied off the knot with two quick passes of the forceps, a motion so practiced it was almost musical, a small mechanical dance of metal on wet tissue. Then, without looking at her, without breaking his focus on the next gap in the skin, he said, in that low, rough Gulf drawl where the vowels stretched out like they had nowhere to be:

"You don't gotta see me be careful. I've done it eleven years. I don't need a witness."

The words landed flat. No edge. No performance. Just a fact, stated the way he might state the depth of a dive or the pressure at two hundred meters. Eleven years. He was counting them. He was always counting them. The years since the chemical plant, since his mentor's face, since the two colleagues who had walked into a corridor of chlorine gas and never walked back. Eleven years of stitching himself up in motel rooms, in the backs of pickup trucks, in the med bay of whatever station or ship happened to have a needle and a roll of catgut. Eleven years of not needing anyone to watch.

Maren picked up the gauze. Set it back down. The pad settled on the counter with the same dry whisper, and this time she did not watch it land.

She turned. Walked to the door. Pushed it open a finger's width.

She did not close it.

Behind her, the sound of the next suture: thread through flesh, the soft pull, the snip. Her breath stayed even. Her jaw worked. She pressed her cheek against the cool steel of the door frame and looked through the crack, and there he was, still at work, still not looking at her, his face turned toward the floor where the surgical light pooled white over the glistening pink of his wound. And his hands, which had been steady for four stitches, three more after that, five, six, seven. His hands were steady.

Eight. Nine.

On the tenth suture, the forceps slipped. Just a fraction. A millimeter. His thumb caught the skin, held it, and the needle went in clean, but his fingers, the ones gripping the tool, twitched. One. Two. Three small, fast tremors that ran up his wrist and into his knuckles, and then they stopped. He set the forceps down. Set the needle down. Lay both hands, flat and open, on his knee, and he just sat there, in the white light, in the quiet, and the shaking went on under the stillness, small and rapid, like a bird's heartbeat trapped behind glass.

Maren watched through the crack until it stopped.

It stopped after four minutes. Or five. She had not been counting. She had been watching the way his shoulders, which had been pulled up tight against his ears since the seal held, slowly, almost imperceptibly, dropped. The way his breathing changed from the shallow, quick pulls of the adrenaline crash to something slower, something that had a floor to it. The way the trembling in his hands thinned, thinned, and then was just the natural micro-tremor of a body that was not in fight or flight anymore. A body that was, for the first time in eleven years, just sitting still and being alive and not stitching a wound shut because the alternative was not knowing what the wound was doing.

She closed the door. Softly. The latch clicked.

Then she walked to the vault.

The vault was not the med bay. The vault was a long, narrow room at the base of the station, lined with specimen shelves and cold storage units that hummed a low, constant B-flat. The air in it was always three degrees cooler than the rest of the station, and it smelled of formaldehyde and brine and the faint, sweet rot of tissue that had been preserved too long. Maren ran her hand along the top of a shelf and felt the grit of old ice crystals, and she told herself to work. She told herself because working was the thing she did when the quiet got too loud. When the silence after the danger started to fill the spaces where Elias used to stand, where his voice used to say Maren, your centrifuge is off-axis in that patient, slightly exasperated tone that no one else had ever used with her and that she had, three years later, not replaced with anyone else's.

She pulled the last batch of tissue samples from the cold storage. Forty-seven vials of bioluminescent tissue, the remnant glow specimens that were the entire point of the project, the entire reason she had not gone home after the funeral. She set them on the lab bench and began to process. Centrifuge. Stain. Slide. Microscope. Stain. Slide. Microscope. The rhythm of it was a metronome, and she let it keep time for her while her mind refused to do what it was supposed to do, which was think about the next sample, and instead thought about the torch.

The torch.

She had watched him in the sensor room. Watched him hold the flame to the seal seam, that small blue-white cone of heat that had been the last warm thing in a corridor that had been freezing for eleven minutes and four seconds. He had held it the way a man holds something he is afraid to put down. Like if he set it on the plating for one second, for a microsecond, the heat would vanish and the cold would come back in through the gap and the whole structure would breathe out and be gone. His jaw had been set. His shoulders had been up. And the torch, the little blue-white tongue of fire, had been in his hand like a living thing, like the last warm thing in the universe, and he had not been brave about it. He had been terrified. He had been holding the last warm thing in the universe and he had not set it down and his face had been, and she could not find the word for it, not in her vocabulary, not in the one she used for lab reports and team meetings, and the word she reached for was the one Elias used to use when he was looking at a specimen that was dying, when the glow was fading and he could not save it and he would not stop looking at it. Fierce. That was the word. He had been fierce. And warm. And it had been the two things at the same time, and she had not known a person could be both, not for eleven years, and the knowledge had sat in her chest like a swallowed stone.

The centrifuge spun. The stain ran. She pressed the slide under the lens and leaned in and looked at the bioluminescent proteins, the small blue-green fire that was dying in every deep-sea organism on the planet, the remnant glow that was fading by two percent a year, the slow going-dark of a world that had not noticed it was going dark because it had never been lit that bright to begin with. She recorded the intensity. The wavelength. The half-life. She wrote it down in her careful, small hand, and the numbers were the only honest things in the room.

Four hours. Five. The vault light buzzed. A cold storage unit cycled, and the B-flat dipped to a B, then climbed back. She did not stop. She did not leave the bench. Cassia Wren had texted at hour three, a single line: You there, boss? Maren had typed back: Working. Cassia had replied: You don't gotta work. The station's stable. Maren had typed: I know it's stable. I'm working anyway. Cassia had not replied. Yara Voss had been asleep in the crew quarters since the seal held, and Maren had not gone to check on her, because checking on Yara would mean leaving the bench, and leaving the bench would mean the centrifuge would stop, and the centrifuge stopping would mean the quiet would come back, and the quiet would come back with the image of the torch, the fierce blue-white tongue of fire in a man's shaking hand, the last warm thing, and she could not look at it yet. She could not. Not yet.

Seven hours. Her lower back ached in a new way, the way it ached when she had been hunched over the microscope for too long, when the cold had seeped into the small of her spine through the thin floor plating. She did not stretch. She did not pour water. She set down the forty-seventh slide, ran the final stain, captured the image, and filed it under specimen set nine, the fading set, the set that would go into the archive and no one would look at for five years, and then someone would look at it and say ah, here is where the glow was before it went away, and the number would be smaller than the last one, and the next one would be smaller than that, until the set was empty, until there was no glow left to record, until the deep sea went the color it had been before the first bioluminescent organism had decided, three billion years ago, to be a small blue light in the dark.

Nine hours.

Maren set the microscope down. The lens hissed, small and cool, as she wiped it. The vault was quiet except for the hum of the cold storage and the tick of the ventilation. Her hands did not shake. Her back did not ache anymore. The stone in her chest had moved, slid to one side, and she could breathe around it now, could feel the flat, cold edge of it pressing against her ribs.

She turned off the vault light. The room went dark, except for the blue-green glow of the specimens on the shelf, the remnant glow, fading by two percent a year, small and persistent and not quite dark yet.

She walked back down the corridor toward the med bay. The door was closed. She pressed her ear to it. Inside, there was the sound of breathing. Slow. The floor rhythm. The sound of a body that was not in fight or flight.

She knocked once. Soft. The knuckle against steel.

A pause. Then the sound of the latch, and the door swung open on its rail, and Dax Thorne stood in the frame of it, still in the same position, still not looking at her, his left arm wrapped in a clean bandage, his right hand still holding the small scissors, the metal dull and flat in the corridor light.

"I'm not done thinking about the torch," he said. His voice was raw. Scraped. The way it sounded when a man had not spoken for nine hours and the first word was the hardest one.

Maren looked at him. Looked at the bandage. Looked at the scissors. Looked at the way his shoulders were down, finally, actually down, and the way his eyes, when they did not quite meet hers but came close, came almost close, held a look that was not fierce and not warm and was both of those things braided together so tightly she could not pull one thread without pulling the whole thing apart.

"Then don't think about it yet," she said.

He set the scissors on the floor. The metal clinked against the plating, small and clear, and the sound filled the corridor, and neither of them moved, and the med bay door stayed open between them, and the blue-green glow from the vault at the end of the hall reached just far enough to catch the edge of the bandage on his arm, and it was the smallest light, the fading light, the remnant glow, and it held, and it did not go out.