Chương 17 - The Ambush in the Deep

A harsh, mechanical *click* echoed through the chamber.
The optical pedestal didn't illuminate in green. Instead, a piercing, two-tone klaxon tore through the subterranean silence, flashing a violent amber strobe across the salt walls.
**WARNING: REVERSE REFRACTION DETECTED. PURGE PROTOCOL INITIATED.**
"What did you do?!" Vance roared, his face contorting into unbridled fury.
"He lied to you!" I yelled. "My father didn't build a key to share the vault! He built a failsafe!"
"Kill them!" Vance screamed.
The guard behind me shifted his weight to fire. In that split-second fraction of a heartbeat, Marcus moved.
He didn't draw his gun. He seized the guard’s rifle barrel, shoving it upward just as a burst of automatic fire ripped into the ceiling, raining pulverized white salt crystals down like frozen shrapnel. Marcus drove a vicious elbow into the man’s throat, ripped the rifle from his failing grip, and swept the legs out from under the second mercenary before he could bring his weapon to bear.
"David, move!" Marcus bellowed, unleashing a controlled burst into the catwalk supports above.
The industrial halogen lights shattered, plunging the cavern into near-total darkness, illuminated only by the frantic amber strobe of the vault's alarm system and the yellow muzzle flashes of automatic gunfire.
Richochets shrieked off the dense salt pillars.
I dove behind an abandoned salt-hauling tractor, the heavy steel tires shielding me from a hail of high-caliber rounds. Marcus slid in beside me, ejecting an empty magazine and slapping a fresh one home in the captured rifle with brutal efficiency.
"We have about ninety seconds before the air in this sector gets sucked dry!" Marcus shouted over the deafening klaxon. "Purge protocol means halon gas or a structural thermite burn!"
Across the chamber, Vance was screaming at his men. "Secure the drive! Pull the core out before the housing collapses! Forget the boy—get the drive!"
Through the amber flashes, I saw two technicians in fire-retardant suits desperately attacking the perimeter bolts of the vault door with hydraulic cutters. Sparks cascaded across the white floor.
"Marcus," I said, grabbing his vest. "The vault isn't opening from the outside. The purge protocol pulls the core down into the bedrock sump pump beneath our feet. My father told me about the drainage system when I was twelve—he called it the 'sinkhole.'"
"What does that mean for us?!"
"It means this entire floor is hollow!" I yelled. "If they trip the thermite, the cavern floor collapses into an underground brine river!"
"Then we need to get back to that hoist right now!"
"Not without the drive," I said, pointing through the darkness.
A heavy, automated cradle had just descended from a secondary shaft directly above the vault door. Inside the cradle was a sealed, cylindrical titanium canister no larger than a scuba tank—glowing with a pale blue internal power cell.
The Sovereign Ledger.
Vance saw it too. The old man dropped his cane and lunged toward the cradle with the desperate, clawing energy of a dying man reaching for water.
"Cover me!" I yelled to Marcus.
"David, no!"
I didn't wait. I broke from the cover of the tractor, sprinting low across the salt floor.
A mercenary stepped into my path, his rifle coming up. Marcus took him out from twenty yards—a double-tap to the center mass that sent the man crashing backward into the white dust.
I reached the cradle just as Vance got his hands on the canister.
The old man turned, his face illuminated by the blue glow of the drive. His eyes were wide, manic, completely consumed by the madness of ultimate control. With his free hand, he pulled a small, pearl-handled snub-nosed revolver from his inner pocket and pointed it directly at my chest.
"It belongs to me, David!" he shrieked over the deafening sirens. "I built this empire! Your father was a parasite!"
The ceiling above us groaned—a deep, tectonic roar that vibrated through the soles of our boots. Massive fissures cracked across the ceiling, releasing slab-sized chunks of rock salt that smashed into the floor around us like falling meteors.
"Shoot me, Vance," I shouted, taking a step toward him. "And you die eighteen hundred feet underground with an empty cylinder. The battery dies if it’s decoupled without the sequence!"
He hesitated. Just for a fraction of a second.
That was all I needed.
I grabbed the barrel of the revolver, twisting it violently downward. The gun fired into the salt between our feet with a muffled *thud*. I drove my shoulder into Vance’s chest, knocking him sprawling onto the stone floor, and ripped the heavy titanium canister from the cradle's locking clamps.
The moment the canister cleared the cradle, a deafening explosion ripped through the vault door behind us.
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A wall of white-hot thermite fire billowed into the cavern, instantly superheating the air to a thousand degrees.
***