Decoherence Cascade

CHAPTER 03

The med-kit was Dominion-standard, which meant Leo had no idea what half of it did.

He sat in the cockpit’s fold-down jump seat, the kit open across his knees, staring at a collection of implements that ranged from recognizable (a suture applicator, a tube of what was probably antiseptic gel) to deeply unsettling (a slim silver wand with a tip that glowed faint blue, a patch of synthetic skin that seemed to be moving).

ECHO said.

“Good to know.” Leo picked up the analgesic vial, squinted at the labeling, then pressed it against his forearm where the instructions seemed to indicate. A cool numbness spread up his arm almost instantly. “Okay. That works.”

Leo found it, hands steadier now. He angled the cockpit’s reflective panel to see his own face—pale, blood-streaked, a gash running from his hairline down to his eyebrow. He looked like he’d lost a fight with a windshield.

“ECHO, do you have medical training in that database of yours?”

Leo got to work.

It was strange, suturing his own face while a woman he’d met an hour ago piloted a ship through interstellar space and an AI who lived inside his skull critiqued his stitch work. Strange in a way that had stopped being terrifying and started being something closer to absurd.

“Scars build character.”

“ECHO, I’m stitching my own head back together in a smuggler’s cockpit two thousand light-years from home. Let me have the rationalization.”

“I was rounding.”

Kaelen, who had been silent since tossing him the med-kit, made a low sound from the pilot’s chair. It might have been amusement. It might have been irritation. Leo couldn’t see her face from this angle, and he was too tired to guess.

The ninth suture went in cleaner than the eighth. He was improving.

“You talk to it a lot,” Kaelen said without turning around. “The AI.”

“Her. And she lives in my head. It’s hard not to.”

“She talks back.”

“Constantly.”

“She says she has an off-switch.”

“And you don’t engage it?”

“I don’t know where it is yet.”

Kaelen turned her chair just enough to glance at him over her shoulder. The cockpit’s amber light caught the silver threads in her hair. “You have an unknown intelligence fused to your neural architecture, and you don’t know how to shut it off?”

“I’ve been busy.”

She held his gaze for a beat, then faced forward again. “You’re either very resilient or very stupid.”

“Both,” Leo said. “Test pilots usually are.”

He finished the last suture and pressed the hemostatic smart-bandage against his temple. It adhered immediately, conforming to his skin with an unsettling, almost eager precision. The bleeding stopped.

“Fortunate,” Leo repeated, deadpan. “I’m on a ship that smells like burnt copper, running from a military that wants to execute me, with a woman who threatened to carve open my skull. The best thing that’s happened to me today is I get to keep my memories. Fortunate.”

“I know, ECHO.”

Kaelen stood from the pilot’s chair. The motion was fluid, economical—no wasted movement, no unnecessary noise. She crossed to a locker set into the cockpit’s aft bulkhead and pulled out a heavy coat that smelled of engine grease and something sharper, like ozone after a storm.

“Stabilizer,” she said. “You said eighteen minutes. It’s been twelve.”

Leo rose, testing his balance. The analgesic was working; his head felt wrapped in cotton, but the world wasn’t spinning anymore. “I’ll need access to the port engine compartment. And tools.”

“You’ll have both. Follow.”

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The port engine compartment was a coffin turned sideways.

Leo had to duck through the hatch, then twist his shoulders to squeeze past a bank of heat exchangers that radiated residual warmth into the cramped space. The compartment was lit by a single amber panel that flickered intermittently, throwing the machinery into strobing relief. Conduits snaked overhead—Flux conduits, with that faint heavy hum he was starting to recognize.

ECHO said.

Leo paused, hand on a coolant line. He remembered glancing at that panel—a flash of blue lines on black, something that had looked vaguely like a circulatory system. He hadn’t studied it. Had barely registered it.

“Do it.”

It started as a tingle behind his eyes, then a pressure, and then—

The compartment in front of him didn’t change. The heat exchangers, the flickering amber light, the conduits—all still there. But now they were overlaid with something else. A ghost of blue lines, semitransparent, hovering exactly where the schematic had placed them. The bearing housing was highlighted in pale orange, a pulsing dot that matched ECHO’s earlier verbal description. The torque compensation assembly arced above it like a rib. The overlay was perfect—not because ECHO had generated it, but because Leo’s brain, fed the memory in excruciating detail, had reconstructed it with hallucinatory fidelity.

“Okay,” he breathed. “That’s… new.”

“Still new.”

Leo gripped the coolant line harder. The ghost schematic wavered as his concentration fractured, then steadied again. He could see exactly where the bearing assembly sat beneath the torque compensation housing—a pulsing orange indicator suspended in his field of vision, as real as anything else in the compartment, except he knew it wasn’t there. It was a memory of a diagram, pasted onto the present.

Kaelen appeared in the hatchway, arms crossed. She didn’t offer to help. She watched.

“Something wrong?”

“No,” Leo said. “Just getting my bearings.” The double meaning was accidental. Or maybe not.

He followed the ghost indicator to the housing, popped the cover. The bearing inside was worse than he’d expected—scored with heat discoloration, seals cracked, lubricant baked into a dark crust around the edges. The overlay pulsed, labeling each component with cool precision.

“This thing’s been failing for months,” he said. “The noise you’ve been hearing? That whine that kicks in when you push past sixty percent thrust?”

Kaelen’s expression didn’t change. “I thought it was a harmonic in the intake manifold.”

“Intake manifold wouldn’t pulse at this frequency. This is mechanical. Bearing’s losing integrity, and the wobble’s transmitting through the torque assembly. You’re losing about twelve percent of your lateral thrust efficiency, and if it seizes mid-maneuver—”

“It’ll take the entire port stabilizer assembly with it.”

“And then you’re spinning.”

“I know what happens when a stabilizer fails at speed.”

Leo straightened, wiping grease on his flight suit. The ghost schematic flickered and dimmed as ECHO paused the playback to conserve his focus. A dull ache was building behind his eyes.

“Noted.”

“Noted what?” Kaelen asked, eyes narrowing.

“ECHO. She’s… giving me a visual reference. It’s hard to explain.”

Kaelen studied him for a long moment, then reached into the compartment beside the hatch and pulled out a sealed crate. Inside, wrapped in protective film, sat a replacement bearing assembly—new, or at least newer than the one currently installed.

“You knew it was failing,” Leo said.

“I knew something was. I didn’t know what.” She handed him the crate. “You diagnosed it in thirty seconds. With help.”

“ECHO pulled your ship’s diagnostics and replayed a schematic I saw. I just… saw where the problem was.”

Kaelen’s lips pressed into a thin line. He could see her turning that over—the implications of an AI that could show him things she couldn’t see, using memories she hadn’t known he’d stored. “What else can she show you?”

“Only things I’ve already seen. It’s memory, not magic.”

“Then it’s a good thing you looked at that panel.”

“Yeah,” Leo said, pulling the old bearing free. “Lucky.”

But as he fitted the new bearing into place—guided by brief pulses of the overlay that showed torque tolerances and alignment markers—he couldn’t shake the feeling that luck had very little to do with it. ECHO had catalogued every glance he’d made since waking. Every flicker of his eyes. And she was already weaponizing his own past against the present.

The new bearing clicked home. Leo tightened the last bolt, and the overlay dissolved completely, leaving only the real compartment—dim, cramped, smelling of grease and Flux.

ECHO said quietly, for him alone.

“Where is Earth?” Kaelen asked, as if she’d been waiting for the silence.

Leo’s hands paused on the wrench. “Far.”

“Define far.”

“Far enough that no one in your systems has ever heard of it. Far enough that your star charts won’t show it. Far enough that I don’t know if I can ever get back.”

“Then how did you get here?”

“Metric compression drive. Experimental. We pushed it past safe limits.” He resumed work, extracting the old bearing with more force than was strictly necessary. “We didn’t know what we were doing. Didn’t understand the physics well enough. The drive folded spacetime in a way it wasn’t supposed to, and I ended up here. My copilot didn’t.”

The word copilot landed heavier than he’d intended. He hadn’t let himself think about Ren until now—Ren, who’d been in the seat beside him when the klaxon started screaming. Ren, whose last words had been “Decoherence Cascade Imminent” read back from the instruments in a voice that was trying very hard not to shake.

Leo pulled the old bearing free and set it aside. The new one slipped into place with a satisfying click.

“There was nothing left of him,” he said, quieter. “Just me. And ECHO.”

Kaelen didn’t offer condolences. Leo hadn’t expected her to. But she didn’t leave, either. She stood in the hatchway, arms still crossed, watching him work with an expression that had softened almost imperceptibly at the edges.

“I’ve lost crews,” she said finally. “Three times. Different ships, different jobs. People who trusted me to get them out.”

“What happened?”

“I got out. They didn’t.” Her voice was flat, but the flatness was the kind you built with practice—a wall, not a foundation. “You learn not to get attached. It’s safer.”

“Does it work?”

“No.”

Leo tightened the last bolt and stood. The compartment felt smaller than it had a minute ago, the air thicker. Kaelen was close enough now that he could smell the engine grease on her coat, the faint metallic tang of Flux residue that seemed to cling to everything on this ship.

“Stabilizer’s fixed,” he said. “You should get your lateral thrust back. The whine might take a few hours to fade while the new bearing seats.”

“Good.”

They didn’t move. The amber light flickered twice more, then steadied.

“ECHO, I swear to God.”

Kaelen’s lips twitched. Just slightly. Just enough. “She’s criticizing you right now, isn’t she.”

“Constantly.”

“Good.” Kaelen turned and headed back toward the cockpit. “Someone should.”

Leo stood in the engine compartment for a moment longer, grease on his hands, a dead copilot’s name caught in his throat, and the strange, unexpected sensation that he’d just passed a test he hadn’t known he was taking. Behind his eyes, the faint afterimage of the schematic still pulsed—a reminder that his own memories were no longer entirely his own.

“Thanks, ECHO.”

“I know.”

Leo followed Kaelen back to the cockpit, the ghost of blue lines fading slowly into the dark.

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