“We are not killing it,” Ray said. “We are buying minutes.”
The steel gate bent again.
Its center moved inward by another inch. The ore carts chained behind it rolled against their locked wheels. One anchor plate lifted from the floor with a squeal.
Beyond the barrier, something breathed hard enough to stir dust through the mesh.
The patrol scout checked the feed from a camera lying sideways in the corridor. Half the image showed stone. The other half showed a pale body crossing too close to the lens.
“Blindjaw,” she said. “Matriarch size.”
Her partner swore once.
Dana heard it over the radio. “Threat profile?”
“Low E under open-route conditions. Higher in a confined push. Mass estimate seven hundred pounds. No visual targeting. Vibration and scent dominant. Response team is nine minutes out.”
Nine minutes was longer than the gate had looked willing to exist.
Ray turned the choke into a sequence instead of a wall.
Fallback one used the maintenance junction and two chained carts. Fallback two used a narrow bend where the patrol shield could cover the full width. Fallback three was the shelter gate. If three failed, medical staff would move casualties through the rear service stair while everyone capable of standing held the approach.
The patrol lead owned contact decisions. Her partner controlled reach with the hooked spear. Ray directed terrain and carts. Dana owned personnel movement. Cal and Harlan handled loads. The shelter technician owned casualties. Marco had no role until a firing lane existed; his bow stayed down.
“Response route?” Dana asked control.
“D lead entering North Two. Support team forty seconds behind. Structural debris at Junction Three.”
“Updated arrival?”
“Nine minutes for lead. Eleven for full team.”
The person most capable of killing the threat would arrive first and alone. Barriers, medical support, containment tools, and extraction gear followed two minutes behind her.
Marco sat on a medical crate while a shelter technician washed grit from his calf. The disinfectant burned. His System Rank still occupied a corner of his attention: G. The single letter concealed the useful route judgment he had shown, the shoulder that trembled when he raised his bow, and the fact that neither made him a combat lead.
His Skills and recorded experience explained why he had noticed routes and carried Wes out.
They did not make him the strongest person at the barrier. The two licensed E-rank patrol delvers had better combat stats, fitted equipment, and years of team drills. Ray had worse knees than Marco and better judgment. Dana had no combat badge and knew every worker behind the shelter door.
Capability had arrived in pieces.
“Seven stitches,” the technician said. “Probably. I need you behind the medical line.”
The anchor plate tore free.
One cart rotated. The chain went slack on its left side.
Ray pointed. “If that wheel clears the curb, the line folds.”
The patrol shield moved forward. “We reset under cover.”
“You need weight on the rear corner,” Marco said.
The technician put a hand on his shoulder. “You need stitches.”
“Can I load the brace without crossing the contact line?”
Ray looked at the route, then at Marco's shoulder. “Left side only. You follow Dana's word before mine.”
Dana said, “One lift. Then behind the line.”
They did not ask whether Rank G was enough. The job was a controlled load task behind two armored delvers, and Laborer had carried more of Marco's actual development than his bow.
The shield delver planted a translucent barrier against the gate. Her partner hooked the loose chain with his spear and pulled it clear of the wheel. Marco, Cal, and Harlan slid a steel brace beneath the cart frame.
The blindjaw struck.
Force traveled through gate, barrier, cart, brace, and Marco's arms. His right shoulder flashed white. He shifted the weight to his left and drove with his legs.
“Pin,” Ray called.
Cal hammered the locking pin through the floor socket.
They withdrew.
Marco's shoulder burned where the previous strain had deepened. The medical technician pressed two fingers along the joint, checked grip, and wrote NO FURTHER LOAD across a strip of orange tape before fastening it to his sleeve.
“That means the bow too,” she said.
“If I can reach medical, yes.”
“It means now.”
Dana settled it. “No firing unless the patrol lead needs the lane to move you out. You are not reserve combat.”
Marco nodded.
His route experience did not lend strength to his shoulder. His weak draw did not erase the anatomy he recognized. Both truths followed him to the firing slot, whether the System compressed them into one letter or not.
The cart held.
The gate did not.
A split opened beside the upper hinge. Pale tissue pressed through, followed by a hooked plate of jaw. The creature had no visible eyes. Its head widened behind the mouth into layered sensory folds that opened and closed like wet leaves.
Marco had processed blindjaw scraps once. Not a matriarch. A juvenile killed in Zone 3 and transported down under seal. The usable scent structures had sat beneath the rear jaw, paired on both sides of the throat. Harlan had called the arrangement wasteful because either sac could fill the room with marker compound after the animal died.
The matriarch carried a larger version of the same anatomy.
One fold along its left side was torn.
Clear fluid threaded down the gate.
Salvage drew Marco's attention to the rupture, not as a target provided for him but as damaged structure he had spent months learning to read.
“Left scent fan is open,” he said. “It may be tracking its own leak.”
The patrol scout studied the camera. “Can we turn it?”
Ray looked toward the maintenance branch on the far side of the choke. “Bait drum from pest station. Put it right branch. We pull scent away from shelter approach.”
“Drum is behind the gate,” Cal said.
“One is in the emergency cabinet,” Marco said. “North Three. Yellow lid.”
He knew because he had entered it on the route card after finding an expired seal two weeks earlier.
Dana sent a runner.
The cart chain snapped.
The sound was smaller than the next impact. The gate tore at the upper hinge and dropped crooked across the opening. The blindjaw drove its head through.
The patrol spear struck the jaw plate and skidded. Imprinted metal carved a white line but did not stop the push. The shield flared blue around the delver's arms.
“Fallback one,” Ray said.
Everyone moved to the second chalk line.
Marco should have been behind medical. Instead he found himself at the shielded firing slot because the route between positions had closed and the blindjaw filled the corridor he would have crossed.
Dana saw him. “Can you shoot from there?”
“Yes.”
“Can you leave?”
“Not without crossing its line.”
“Then shoot only on patrol call.”
His System Rank granted neither command nor a way out. He remained a ranged hand inside the patrol lead's plan.
The blindjaw shoved between gate and wall. Its front limbs unfolded, too long and heavily jointed for its low body. Stone cracked beneath hooked claws. The right sensory fan opened toward the shelter.
“Joint,” the spear delver called.
Marco drew and aimed where the near foreleg met the chest.
His first arrow hit plate and deflected into the ceiling.
Ten remained. The shaft was gone.
The blindjaw surged. The shield caught its head. Blue light rippled backward and threw the delver one step.
Ray and Cal released the first ore cart down the maintenance slope. It struck the animal's left foreleg. The blindjaw stumbled, then rolled the cart beneath its chest with brute weight.
The cart changed the animal's line, then disappeared beneath seven hundred pounds.
The bait drum arrived on a hand trolley. Harlan cracked the seal and dumped half into the right maintenance branch. Bitter gland concentrate filled the choke until Marco tasted metal through his respirator.
The concentrate came from dozens of low-grade scent sacs Ridgeway had collected, including organs whose damage made them unsuitable for tracking products. Salvage had helped Marco recover some of them months earlier. No single sac mattered. Standard processing and a labeled emergency drum had accumulated worthless pieces into a tool large enough to influence an E-grade animal.
The material had been there.
People had wasted less of it.
The blindjaw's sensory fans tightened.
Its head turned three inches.
Then back toward the shelter.
“Leak is stronger,” Marco said. “Its own scent is masking the bait.”
“Can you close the leak?” Dana asked.
He studied the torn fan. Closing it from across the corridor was not possible. Damaging the intact structure might make the bait comparatively stronger—or flood the room with more of the animal's own marker.
“I can open the other side,” he said. “Maybe. That could also make it worse.”
No one treated the idea like a solution.
The patrol scout asked, “What happens when both sacs rupture?”
“Processing specimens lose directional response for several seconds. They search for clean air.”
“Live matriarch?”
“I don't know.”
The blindjaw pressed the shield again. Warning bands crawled across its surface.
The response team was five minutes out.
Ray said, “We don't need it solved. We need its head pointed away for one cart length.”
Dana looked at the patrol lead.
The lead made the decision. “Take the shot. Everyone masks. Fallback two on release.”
Marco nocked.
The intact fan opened behind the right jaw. It was not a large target. It moved whenever the animal sampled air, disappearing behind bone and folding membrane.
Marco's shoulder shook.
He let down.
The blindjaw struck. The damaged gate slid backward. Ray jumped off the chain, but the cart's rear frame clipped his leg and drove him to the floor.
He did not scream. His face went gray.
“Ray down,” Cal shouted.
The patrol spear held the animal for one breath.
Marco drew again.
The sensory fan opened.
He released.
The arrow entered the soft fold and buried to the fletching.
The blindjaw recoiled. Fluid sprayed across its jaw. Both fans snapped open and shut. Its head swung left, right, then toward the baited maintenance branch where cleaner concentrated scent waited beyond the ruined cart.
“Move it,” Dana said.
Cal and Harlan dragged Ray behind fallback two. Marco fired a third arrow into the stone beside the bait branch. The impact vibration turned the animal farther.
The shaft survived in the wall. He would recover it if the corridor ever belonged to people again.
The blindjaw entered the branch shoulder-first.
It did not fit cleanly. Stone broke around its back. The turn slowed it and put two walls between its mass and the shelter gate.
The patrol team fell back together. Marco moved with them, bow down, shoulder nearly useless.
Ray's lower leg bent where it should not.
“Tourniquet?” Cal asked.
“No arterial bleed,” the medical technician said. “Splint. Don't straighten.”
The blindjaw backed out of the branch.
Its head found the retreat line again.
Marco's fourth shot struck the wounded scent fold as it turned. The arrow broke against the jaw plate, but the hit bought one more hesitation.
The corridor lights flashed white.
The response delver arrived alone ahead of her team, wearing a D-rank badge with an active response endorsement and armor dusted from a sprint through three junctions. She carried a short poleaxe with no decoration.
“Positions?” she asked.
The patrol lead answered in six words. “One blindjaw matriarch. Injured. Right branch.”
“Clear behind?”
“Confirmed.”
The D-rank delver crossed the fallback line.
Marco had seen Instructor Price drive a spear through reinforced gel. This was different. The responder did not look faster than vision. She looked precise enough that no movement was spent where the movement could not matter.
The blindjaw charged out of the branch.
She stepped beside its head instead of away. The poleaxe hooked beneath the damaged jaw plate. Mana tightened along the shaft. She turned her whole body once.
The blade entered behind the skull.
The matriarch traveled another six feet and collapsed.
No trap Marco owned could have reproduced the strike. No number of ordinary arrows fired from the front would have guaranteed it. The crew's barricade, bait, injury, and redirection had not made them D-rank.
They had purchased the time for someone who was.
The rest of the response team reached the choke forty-eight seconds later. A licensed E-rank containment specialist checked for secondary creatures. Two support workers anchored a restraint line to the blindjaw's rear limbs. A medic took over Ray's leg and directed the shelter technician. A structural engineer inspected the branch before anyone approached the recoverable arrows.
The D-rank delver stepped aside as the containment specialist, medic, support workers, and structural engineer took over their own parts of the corridor.
“Threat contained,” control announced. “Zone rank review pending. Existing classifications suspended for North routes.”
Marco lowered Ridgeway's bow. Its arrow rest leaned visibly to the right, bent during the cart impact or his retreat. Two of the four fired company shafts were recoverable. Nine intact work arrows remained.
The response delver checked the creature twice before signaling a guarded approach.
Marco recovered the arrow from the wall. Its shaft passed flex inspection. The arrow through the right fan had cracked behind the broadhead and went into evidence with the organ. The ceiling deflection was unreachable. The fourth had broken against jaw plate.
Four company arrows fired. Two returned intact. Nine in the work quiver.
The bent rest changed the bow's center enough that he tagged it unsafe before anyone could hand it back.
Medical staff cut Ray's boot away. The older man stared at the ceiling while they splinted his tibia.
“Did we hold?” he asked.
Dana knelt beside him. “Long enough.”
The evacuation alarm continued for another thirty seconds. Then control silenced it.
Without the siren, the choke became impossibly quiet.