The Strike Point

The cold in the lower maintenance spine did not bite; it chewed. With Sector Four's air pump drawing hard vacuum against cracked masonry, every breath through Nuno Sotomayor’s wool muffler tasted of frost, pulverized granite, and stale sulfur.

Nuno kicked a jammed iron valve, listening to the hollow groan vibrating through the basalt ribs of the station. He adjusted his copper-rimmed spectacles with a stiff thumb. "Mind the tread on that ladder, boys. If you drop a keg now, we save the Crown Fleet thirty minutes of gunnery and miss our chance to die with some dignity."

Behind him, the two garrison sappers hauled their equipment sled along the iron guide-cables, kicking off the bulkheads in the sluggish, near-zero gravity of the lower spine. Upon the timber runners sat their entire arsenal: three barrels of genuine black powder hauled down from the San Fernando, four hampers of coarse charcoal scraped from the condenser flues, and six copper canisters packed with raw phosphorescent prism-dust.

The prism-dust hummed with a faint, sickly violet glow, responding even through the tin plating to the distant chromatic cannonade hammering the upper redoubt. Every time a Crown broadside slammed into the outer curtain wall eighty yards above, the violet light inside the seams flared brighter, leaching the warmth straight out of the metal rivets.

"Master Sotomayor," whispered Sapper Ortiz, his knuckles gray where his mittens had worn through. "The spine arch is warping. The overhead brackets have sheared two inches to port."

"Then the Crown is doing half my work for free," Nuno said. He knelt beside the primary load-bearing pillar where the natural asteroid bedrock met the iron collar of the docking trench. He ran a scarred palm along the seam. "They hit the upper masonry, the load transfers straight down through this strut. If we blow the root, the entire docking ring folds inward like a trampled basket."

He produced the heavy iron key Mireia had given him, slipping it into the double-locked gate of the auxiliary magazine conduit. The tumblers ground together, stiff with rime, before yielding with a dry clack.

Inside the narrow chamber, the station’s structural bones lay exposed: eight massive forged-iron tie-rods anchored twenty feet deep into solid basalt. This was the hub that kept the Border Bastion from snapping under the gravitational torque of the passing auroral slipstream.

"Lash the three powder kegs to the central nexus," Nuno ordered, stripping his heavy outer gloves to work with linen-wrapped fingers. "Pack the flue charcoal tight around them so it doesn't drift. We need the charcoal to slow the burn just enough for the heat to crack the mineral casings."

Ortiz and his companion wrestled the weightless barrels into position against the low centrifugal pull, clamping them tight between the iron rods with forged dog-irons.

Demolitions was never about noise; it was about geometry and bad manners. Nuno unslung a roll of braided copper wire from his shoulder, uncoiling the shiny strands along the guide-rails. He took the first canister of prism-dust, popped the lead seal with his bodkin, and used a brass tamping iron to pack the luminescent violet powder directly into the bore-holes chiseled into the rock before the grains could float free.

The dust reacted instantly to the cold draft, throwing off a pale, phosphorescent vapor that made his teeth ache. This mineral came from the deep void trenches, capable of absorbing chromatic radiation and releasing it in a violent kinetic snap when shocked by an explosive flame. Combined with standard black powder, the resulting blast would not merely shatter the stone; it would tear the local atmospheric envelope into ribbons.

"Master," Ortiz murmured, pointing up the vertical conduit with his short carbine. "Listen."

Above the low thrum of the distant guns came a rhythmic, metallic screech: iron teeth grinding through cold plate.

"Breach cutters," Nuno said calmly, his hands never pausing as he spliced the copper wire into the friction primer. "Admiral De la Cerda is nothing if not punctual. He wants the spine intact so his prize crews can tow the hulk."

A muffled bang echoed down the ventilation shaft, followed by the hiss of venting gas. Five hundred yards up the corridor, an emergency bulkhead slammed down, its warning chime chiming three times before dying in a squall of static.

"How long on the line, Master?" Ortiz asked, cocking his weapon. Beside him, the second sapper braced his boots against an iron bulkhead flange and leveled a heavy wheel-lock toward the dark corridor.

"Ten minutes if I want to walk away," Nuno replied, twisting the final copper lead around the percussion cap. "Five minutes if I don't care about keeping my boots."

The metal ceiling above them buckled with a shriek. A heavy magnetic drill bit punched through the plating, showering the dark chamber with white-hot sparks and frozen condensation. A second later, a pneumatic ram forced the hatchway open, and the freezing void air rushed into the conduit, extinguishing their tallow lanterns in an instant.

Through the swirling frost, the blue glare of Crown boarding lanterns cut the darkness.

"Sovereignty rebels!" a voice barked from the breach. "Lay down your arms under the authority of the First Line!"

"I'd love to discuss terms!" Nuno shouted back, ducking behind the central basalt pillar. "Unfortunately, my schedule is completely booked!"

The corridor erupted in gunfire.

Two Crown marines vaulted through the ceiling aperture in the weightless drift, their breastplates gleaming in the lantern light as their heavy arquebuses flashed orange. The lead ball ricocheted off the basalt pillar an inch from Nuno’s ear, spraying sharp stone chips across his cheek.

Ortiz fired his wheel-lock, catching the first marine in the gorget. The second marine pushed off a ceiling strut with a boarding pike, driving the steel point clean through Ortiz's shoulder. Ortiz screamed, floating backward into the lashed powder crates as the second sapper fired a point-blank pistol shot into the hatchway.

Smoke filled the freezing shaft, thick and acrid, swirling in slow, sluggish eddies in the dying air.

Nuno did not look at the fallen men. Demolitions offered no margin for sympathy. He pulled himself along the floor tethers toward the primary firing junction. The copper wire had snagged on a fractured timber brace; the violent jolt had loosened the percussion cap from the central friction block.

If the cap slipped free, the spark would fail to ignite the prism-dust, and the Crown marines would possess both the station and the charges.

Another volley of musket shot chewed through the timber framing above his head. Splinters drifted like needles through the cold. Ortiz's companion collapsed across the magazine threshold, clutching a shattered knee before dragging himself up the access ramp to draw fire.

"Hold the ramp!" Nuno hissed, spitting blood from a cut lip.

He reached the base of the pillar. His fingers were completely numb, the tips white and dead from the sub-zero draft. He fumbled in his waistcoat for his iron hand-vise, clamping the loosened copper lead back against the percussion block.

A Crown officer in a scarlet-trimmed coat drifted through the hatch, sweeping his saber toward the wiring. "Cut those lines! Seize the magazine!"

Nuno drew his short flintlock pistol from his belt, rested the barrel across his left forearm, and squeezed the trigger.

The flint struck steel; the flash illuminated the officer's face an instant before the heavy lead slug took him in the center of his breastplate, knocking him flat into the breach debris.

Three more marines surged through the smoke, bayonets fixed.

Nuno jammed the friction peg into the primer housing with his bare palm, feeling the cold brass bite deep into his flesh. He had no time to string the safety fuse back to the upper redoubt. The entire circuit was now primed to a single manual trip-lever resting directly beneath his right hand.

He backed into the narrow cleft behind the basalt arch, tucking his knees to his chest. The violet glow from the open canisters pulsed against the stone walls, casting long, jittering shadows as the Crown vanguard charged into the room.

Nuno wrapped his bleeding fingers around the iron lanyard ring, his eyes fixed on the lead marine's boots crossing the powder line.