GRENUN: When The Air Killed Us

Chapter 18: The Blast Door

SKRRR-HHHH. SKRRR-HHHH.

Inside my Dräger respirator, the air is running hot, thick, and metallic. The twin charcoal canisters on my jaw vibrate violently with every desperate breath I drag into my lungs. The internal battery of the yellow emergency box is dead; the cold indigo bubble is gone. We are operating entirely on the remaining reserve capacity of our personal filters.

Eight minutes.

My left hand hangs uselessly at my side, my fingers completely numb from carrying the spent scrubber core up the granite ridge. Sweat pools inside the silicon skirt around my chin, sloshing against my skin as I stare across the rain-swept concrete yard of the broadcast compound.

Ten feet ahead, Dr. Weber pushes himself off his knees. The electrical surge from the gate lock has scorched the right lapel of his white lab coat, leaving black grease stains across his wool sweater. He doesn't bleed. He doesn't limp. He steps smoothly onto the paved pathway, blocking the narrow concrete approach to the relay station.

Beyond him, set deep into the granite cliff at the base of the three-hundred-meter steel tower, sits the main access portal: a heavy, six-inch-thick steel blast door. Set into the wall beside the doorframe is a digital security terminal flashing a bright red LED grid: SYSTEM LOCKED — ENTER AUTHORIZATION PIN.

"Eight minutes of oxygen, Silas," Weber says softly, his clear baritone carrying effortlessly over the howling mountain wind. "You burned the master battery array to clear an iron chain-link gate. And now you're trapped out in the open with an empty scrubber and a eight-digit rolling access code."

Behind us, the iron security fence groans.

The transformed workers and police officers from the access road crowd against the wire mesh, their grey hands reaching through the chain-link grid. They don't try to climb. They simply open their mouths in unison, pressing their chests against the steel wire to project their voice forward.

Schlaf, Kindlein, schlaf...

The acoustic resonance hits the concrete yard, vibrating straight through the soles of my boots into my shins.

A sudden, violent throbbing explodes behind my temples. My vision doubles, the red LED grid on the distant blast door blurring into a streak of bloody light.

Fight it, I scream internally, biting down hard on my lower lip inside the mask until I taste copper. Do not listen to the frequency.

"He's stalling," Mara snaps, her voice harsh and raspy through her speaker grill—phut-clack.

She steps past me, her boots splashing through a puddle of black rainwater on the concrete. She doesn't raise her empty shotgun. She swings the heavy iron barrel like a club, aiming straight for the left side of Dr. Weber's neck.

Weber doesn't flinch. He steps inside the arc of the swing with terrifying speed, his grey, dark-veined hand shooting out to catch the shotgun barrel in mid-air. The steel impact echoes across the yard, but Weber's arm doesn't yield an inch.

"You're fighting a closed system, Mara," Weber hums gently, his milky white eyes locked onto hers. "Your lungs are already burning. Your charcoal filters are saturating with moisture. Why bleed for a broadcast signal that no one down in the flood can hear?"

"Because you're still talking," Mara snarls.

She doesn't pull the gun back. She drives her right knee straight up into Weber’s solar plexus with full force.

The kinetic blow hits his chest with a heavy THUD. Weber staggers back two steps, his grip slipping from the iron barrel, his boots skidding across the wet concrete.

"Silas!" Mara screams, turning her head to me. "The terminal! Get to the door!"

I don't waste a second. I throw my body past Weber, sprinting straight down the concrete path toward the blast door.

My leather shoes slam onto the wet pavement. My lungs scream for air, the Dräger intake valve chattering frantically as I force my trembling body forward.

I hit the granite wall beside the blast door, slamming my back flat against the cold stone, and stare at the digital keypad.

ENTER AUTHORIZATION PIN:

ATTEMPTS REMAINING: 3

LOCKOUT PENALTY: 60 MINUTES

"The code!" I shout through my facepiece, my voice coming out as a strained, wet bark. "Weber said it was changed three hours ago!"

"He's lying!" Mara yells, parrying a strike from Weber’s grey arm with the stock of her shotgun ten feet behind me. "He was in Sub-Level 3 when the quake hit! He didn't have access to the off-site network security keys after the main grid collapsed!"

My brain races through the system logs from Floor 2.

Three hours ago. Three hours ago, the automated containment protocols triggered across all regional bio-domes. When Sub-Level 3 initiated the Regen-4 containment purge, the facility mainframes automatically locked down all secondary relay stations using the standard disaster override sequence.

It wasn't a personal PIN set by Weber. It was the Project Regen fail-safe default.

The standard eight-digit molecular weight override for Regen-4 aerosol.

My shaking, sweat-slicked fingers hover over the glowing numeric keypad.

Carbon... Hydrogen... Nitrogen... Sulfur.

1-0-4-8-2-9-7-1.

I punch the numbers into the glass pad.

BEEP. BEEP. BEEP. BEEP.

With every keystroke, the red LED display flashes amber.

Behind me, Dr. Weber lets out a harsh, sharp hiss—the first non-humming sound he has made since we reached the ridge. He disengages from Mara, turning his slate-grey face toward the blast door, his milky eyes wide with sudden rage.

"Silas!" Weber roars, his smooth baritone cracking into a terrifying, guttural screech. "Step away from that keypad!"

He lunges across the concrete path toward me, his long grey fingers outstretched like iron claws.

"I don't think so!" Mara shouts.

She dives low across the pavement, throwing her entire body weight straight into Weber’s ankles.

They crash onto the wet concrete together in a tangle of limbs. Weber slams his elbows down against Mara’s back, trying to push himself up, but Mara wraps her arms tightly around his knees, pinning his legs to the ground with brute force.

"Enter it!" Mara screams into the concrete floor, her mask speaker crackling violently. "SILAS! ENTER IT!"

I punch the final two digits into the pad.

BEEP. BEEP.

The digital display pauses for one agonizing second. The red LEDs pulse once, twice... and turn solid green.

ACCESS GRANTED

OVERRIDE SEQUENCING ACTIVE

DISENGAGING PNEUMATIC LOCKS

A heavy, deep hydraulic groan echoes from inside the granite wall.

The blast door shudders. Heavy iron deadbolts retract into the doorframe with a series of loud, echoing CLANGS—SNAP-SNAP-SNAP. The six-inch-thick steel door unseals, popping outward two inches with a loud hiss of pressurized clean air.

Cold, dry, unpolluted air rushes out through the crack, sweeping across my facepiece and blowing the pale green mist away from the threshold.

"Mara! GET IN!" I scream, grabbing the heavy steel handle of the blast door and yanking it open three feet.

Mara kicks Weber’s chest with her heel, twisting out of his reach, and scrambles across the wet concrete on her hands and knees. She plunges through the narrow gap into the dark interior of the bunker.

Dr. Weber pushes himself up off the ground, his white coat torn, his dark-veined face twisted into an ugly mask of rage. He lunges for the doorframe, his grey hand reaching out to catch the edge of the steel door.

I throw my entire body weight against the outside of the heavy blast door.

SLAM.

The steel door strikes Weber’s outstretched hand, catching his fingers in the jamb. He lets out a wet, agonizing howl, but I don't stop. I lean my shoulder into the metal, driving the door flat against the frame until the internal deadbolts engage.

CLICK-LOCK.

I spin the heavy interior locking wheel three full turns until the iron dogs seat deep into the granite masonry.

The sound of the roaring storm, the howling wind, and the synchronized lullaby vanishes instantly.

We are inside.

The silence inside the relay station bunker is total, broken only by the sound of our own heavy, ragged breathing echoing inside our respirator facepieces.

SKRRR-HHHH. SKRRR-HHHH.

I slump against the cold concrete wall of the entryway, sliding down until my boots hit the dry floor. My chest heaves violently, my hands shaking so badly I can barely unclamp my left arm from the spent yellow box.

The bunker hallway is lit by low, amber emergency strip lighting mounted along the baseboards. The air inside smells of dry dust, warm electrical wiring, and fresh machine oil.

Mara sits four feet away on the dry concrete floor, her back pressed against the opposite wall, her empty shotgun resting across her thighs. Her headpiece is tilted down, her shoulders rising and falling with every deep drag of clean bunker air.

"We're in," Mara says, her voice barely a whisper through her speaker grill.

I look down at the digital watch strapped over my coat sleeve.

REMAINING CANISTER LIFE: 00:04:12

Four minutes of air left in our personal filters.

I tilt my head back against the concrete wall, looking down the dark corridor toward a heavy reinforced glass door at the end of the hall. Behind the glass sits the main control room of the regional transmitter—a massive bank of server racks, glowing blue circuit breakers, and a central master broadcast console stamped with a large yellow sign:

PRIMARY FREQUENCY TRANSMITTER — REGIONAL BROADCAST ARRAY

The room is dark. The master circuit breakers are down.

And sitting on the floor directly in front of the central console, leaning back against the steel control desk with his head tilted toward the ceiling, is a body.

He is wearing the dark blue uniform of a senior broadcast engineer. His mask sits on the floor beside him, its intake canister completely detached. His skin is slate-grey, covered in thick black veins that have stopped pulsing.

In his right hand, locked in a dead grip, he holds a heavy iron breaker key.