Captain Dorian Kael knew the filter on his mask was failing when the smoke started tasting like old pennies and hot plastic.
He did not have another filter. Nobody in Third Retrieval did. The quartermaster had signed out the last case two days ago, before the western hospital burned and command stopped pretending the city grid could be saved.
The street ahead had been a commercial block once. Dorian could still read part of a bakery sign through the soot. The front window was gone. A child's chair lay upside down beside the curb with one leg melted shorter than the others.
Movement came through the haze near the bus shelter.
Dorian lifted one fist, and the six men behind him stopped without speaking. Halden knelt at his left. Corporal Merrit covered the second floor windows across the street, though most of those windows had no glass left in them.
The infected came out in a broken line. Former workers, former parents, former anyone. Their uniforms and coats still tried to make sense of them. The bodies moved wrong, pulled forward by hunger that did not care about knees or broken ribs.
Dorian put the first round through the closest one's forehead. The second one kept coming with half its jaw hanging loose.
"Captain, left alley is breaking open behind us," Halden said over comms.
Dorian shifted two steps, fired into the alley mouth, and watched three shapes fold into the trash water. Another came over them on all fours.
"Pull in tight and keep your muzzles low," he said. "We move through them, not around them."
Nobody argued. Third Retrieval had spent the last nine hours learning what happened to men who argued with distance.
They advanced by storefronts. Dorian counted doors, not bodies. Two blocks to Meridian Bio Storage. One block and change after the old tram sign. They had lost the armored carrier at sunrise, the medic before noon, and most of their ammunition in the school district.
The sample was still supposed to exist. A clean vial from the first containment batch. Command had said it might give Prime a way to understand the Aegis Virus before it crossed the quarantine line.
Command had said many things from clean rooms.
Merrit fired from the rear and cursed when his rifle clicked empty.
"Swap with Vale and keep moving," Dorian said. "Nobody stops to reload in the open."
Vale shoved a fresh magazine into Merrit's chest rig and took the rear angle. The infected pressed closer. They did not call to each other. They did not hesitate. Boots splashed through ash, old rain, and blood thin enough to run along the curb.
A private named Joss went down at the intersection.
Dorian heard the wet impact before he saw it. Joss had turned to cover a side door. Something inside pulled him backward by the vest. Halden moved to grab him.
"We cannot pull him out from here," Dorian said, and hated that the order came out steady.
Halden's jaw worked under his mask. He moved.
The Meridian gates rose ahead, scorched but standing. One security lamp still blinked above the keypad. Dorian pointed Merrit to it.
"Tell me that door still knows your hand," he said.
Merrit ran hunched over, slapped his palm against the reader, and swore when it rejected him. He wiped blood off the glass and tried again.
"It knows my print, Captain, but apparently it hates everybody today."
The lock turned green.
Dorian and Halden covered the street while the gate crawled open. The infected were close enough now for Dorian to see the burst veins under their skin. One wore a courier bag. Another still had a hospital bracelet on its wrist.
"Move inside in pairs and keep the rear covered," Dorian said. "Rear guard seals it after the last man crosses."
The gate scraped shut behind them with infected hands already striking the other side.
The reception hall smelled worse than the street. Blood had dried in drag marks across white tile. A woman in a lab coat lay half under the front desk, one hand still closed around a keycard.
Dorian crouched, took the card, and pressed two fingers to the side of her neck because habit was stronger than sense. Nothing.
"We have six still standing, and two are hurt," Halden said. "Vale has a bite through the sleeve, and Merrit cannot feel two fingers."
"Vale stays outside storage until we know whether the fever starts," Dorian said. "If it starts, he tells us while he can still talk."
Vale gave a rough laugh through the comm. "I always wanted a leadership role."
"You have three minutes to enjoy it."
That got one tired breath from the men, close enough to a laugh for the place they were in.
They moved into Bio Storage. Dorian used the dead doctor's card at every locked door. The first room had shattered vials. The second held burned logs. In the third, a freezer sat open with frost crawling over the floor and a corpse wedged against the hinges.
Halden pulled the body aside. Dorian checked the racks.
Empty. Broken. Ruined.
He worked faster, drawer by drawer. The names on the labels stopped meaning anything. Aegis strain markers. Enzyme stabilizers. Failed serum trials. All of it dead paper if the vials were gone.
Merrit found the only clean one behind a cracked tray of coolant.
"Captain, I have one sealed vial in rack C," he said. "Green marker with no breach that I can see."
Dorian took it and held it under the freezer light. The fluid inside gave off a low green shine. Not bright. Not enough for all the dead outside.
"I am confirming the seal and packing it now," he said. "Everyone keeps looking until I call the room clear."
Halden stared at the freezer shelves. "There is no batch here because someone cleaned the backups before we arrived."
"Then we find who moved them after we get this out."
The gate took a hard hit from the front of the facility. The sound carried down the corridor and through the soles of their boots.
Vale spoke over comms, too calm. "The door frame is bending, and I can hold them for maybe thirty seconds if I lie about it."
Dorian closed the foam case around the vial and clipped it inside his chest pouch.
"Everyone falls back to corridor B before this turns into a box," he said. "Nobody buys time alone unless I order it."
"Captain, I already told you I got promoted."
The next impact tore metal. Gunfire answered. Dorian ran with Halden and Merrit behind him. At the bend, he saw Vale braced against the security door with both shoulders, firing one handed through the widening gap.
Halden shoved Dorian toward the emergency exit.
"You need to take the sample out before this whole corridor folds," Halden said. "Give Elias a father worth lying about."
Dorian caught his vest. "You do not get to use my son in an order."
"Then call it a request from a dying friend and move."
The frame split. The infected poured arms through the door.
Halden pushed him again, harder this time, and Merrit dragged Dorian by the strap of his armor. Dorian fought the pull for one breath too long, then ran because the vial was still against his chest and everyone behind him had already paid for it.
The emergency doors opened into service air and burning dusk. Behind him, Halden fired until the rhythm broke.
Then came the small metal click Dorian knew better than any prayer.
The blast punched through the hallway. The emergency doors slapped shut. Dust rolled out around the seals.
Dorian stood outside Meridian Bio Storage with Merrit bent double beside him and the sample case beating against his ribs each time he breathed.
He keyed command.
"Prime Control, this is Captain Kael. We have retrieved a partial sample from Meridian Bio Storage, and Third Retrieval is combat ineffective. I need extraction for two living personnel."
Static answered first.
A woman came on after it, not one of his usual handlers.
"Captain Kael, Prime has accepted your retrieval report, and Cradle quarantine is now permanent. No rescue assets remain assigned to your sector."
Merrit looked up slowly.
Dorian kept his thumb on the transmit switch. "Say that in plain language for the men who died getting your sample."
The voice held a trained pause. "Prime Planet is severing contact with Cradle, and your position is beyond recovery."
The green vial pressed cold through the pouch.
Dorian looked back at the sealed doors, then at the ruined street beyond the alley. He thought of Elias at ten years old, trying not to cry in front of officers because Dorian had taught him to stand straight during bad news.
"Then send the stipend to my son," Dorian said. "Do not send this through a committee or trade it for a memorial speech. Send the money to Elias Kael."
"That request has been logged, Captain. Prime thanks you for your service."
The line went dead while the city kept burning.