“Okay,” he said. “We split. Reggie, you take the thermite cable and those charge sleeves and stash them along the power trunk between Pad One and Pad Two. If we need a hard kill, I want a single pull to take both offline. Don’t set timers. Hard-wired remotes only.”

  Reggie nodded, eyes gone flat and practical. “Yes, Dad.”

  “Nia, you and I ghost the bunker,” Ben continued. “Find the master shard, dump their brains, and push Julie’s bleed routine if she gives us one. If we can’t take control, we make sure nothing can flip a switch.”

  Julie blew out a breath. “I’ll code you a manual valve sequence. If you get access, run it. If you don’t: options get violent.”

  “Understood,” Ben said. He looked at Nia. “You good?”

  She cinched her hood. “Been waiting all day.”

  They were about to break when the ground trembled — not the subtle truck-on-a-bridge shudder, but a real, throat-felt lurch that knocked powder off the boughs above them.

  Somewhere past the containers, a whomp sounded — an air cannon hitting a snowbank. A plume shot upward behind the pad — white and edged with brown — and fell in heavy clumps across the vent boxes like dumped cotton. The guards flinched as one, stared, then jerked to life. One grabbed his radio. The other ran toward the plume, boots punching through into a slurry hidden by the fresh-fallen snow. He yelped and swore and pinwheeled arms to keep from going down.

  Floodlights bloomed. The drone dropped low, nose toward the new vent. Sodium fixtures buzzed to life, washing the pad in dirty gold. The sound of pumps rose — an angry, insectile chorus.

  “Loop C just spiked,” Julie said, voice gone tight. “And someone opened a bypass for six seconds, then slammed it shut. That little pop was the system saying hello.”

  “Then we’ve got less time than we thought,” Ben said.

  He met Reggie’s eyes. Reggie nodded once and slid away into the trees, a white shadow with a coil of cable over one shoulder. Nia tapped Ben’s boot with her pole and pointed east, into the thickening dusk.

  They moved.

  CHAPTER 9

  East of Pad One

  Dusk

  Ben and Nia moved under the trees, trading the pad’s harsh sodium glow for a wash of twilight that made everything blue. Snow muffled their steps, but the ground betrayed them in other ways — soft pockets that sagged, thin crust that cracked like glass. Behind them, the floodlights burned brighter and the drone’s buzz drifted in lazy circles.

  The entire place felt like a sleepy town with a bad dream brewing under its streets.

  Nia set the line — east, then north, then a slanting traverse along a slope where the wind had scoured the snow down to hardpack. She never rushed. Every few yards, she tested with a pole, read the snow like braille, and only then waved Ben through.

  “Bunker’s a klick and change,” she said, voice soft in his ear, amplified by the comms controller. “They hid it in an old quarry bench. Ran a trench up to it and covered the fiber with snow. You’ll see blue flags if the wind hasn’t buried them.”

  Ben nodded and kept moving. The cold had sharpened, biting at the thin spaces around his goggles. He felt the clunk of the pistol against his ribs when he crawled and the familiar rub of the carbine sling along his shoulder when he stood. Normal things. Useful anchors.

  “Status,” Julie asked.

  “Moving to the bunker trail,” Ben said. “Reggie’s on the power trunk.”

  “Copy that,” she said. “I’ve got an ear on his mic and a hand on the field bus. Pressure cycles ticked upward again after that little burp. Not panic time yet, but close.”

  Ben stepped over a low downed branch and breathed slow. “Give me the short version for a tired brain.”

  “Short version?” Julie said. “Yellowstone’s like a gigantic pressure cooker with lots of little lids on top. Those lids are made of clay and silica and other minerals. They keep the steam and water in the right places. Hartmann poked holes through some of those lids and is thumping the system to see how it reacts. If they thump too hard or at the wrong time, a lid pops. When a lid pops here, it’s not a cute geyser for tourists. It’s a steam explosion that can fling rocks like cannonballs.”

  Nia glanced back, listening to the explanation through her own earpiece, and added aloud, “And if you pop a lot of small lids too fast, the pressure looks for a new path, which can be worse.”

  “Understood,” Ben said.

  Reggie came through their earpieces in a harsh whisper. “For the record, I hate every inch of these power boxes. They’re stamped with smiley-company logos and full of cables the thickness of my wrist. I’m threading the thermite like Christmas garland. We blow this trunk, Pads One and Two go dark.”

  “Keep your head down,” Ben said.

  “What do you think I’m doing over here? Jazz hands?”

  The wind shifted and gave them a gift: the smell of diesel faded and the trees cut the pad noise. In that pocket of quiet, Ben heard the land’s real voice — little pops of freezing sap, a whisper of gas through a vent far below, the staccato hiss of snow crystals skittering over hardpack. It felt alive and annoyed.

  They crested a rise and Nia pointed down into a shallow cut: a neatly scooped trench running arrow-straight through the timber. Waist deep. Snow filled it, but not evenly. Blue flagging tape peeked out of a drift like a tab from a book.

  “Cable trench,” Nia said. “This is their umbilical — power and fiber to the bunker.”

  Ben slid into the trench, knees sinking to mid-shin, and felt the snow tighter under the crust — packed by human feet and sled skids. Nia slid in behind him. The trench curled through the trees as if drawn by a surveyor, every corner marked by another blue flag, every fifty yards interrupted by a white plastic vault the size of a cooler.

  They passed one of the vaults. A hairline of frost traced its lid; a gunmetal lock sat like a wart on the side. Nia tapped it with her pole. “Junctions. We don’t have time to cut them.”

  “No,” Ben said. “Keep us moving.”

  They followed the trench until the trees thinned and the ground opened into a flat, windswept bench carved into a slope — the remnant of a quarry road long abandoned. At the far end: a shape that wasn’t rock or snow. From a distance it looked like a low snow bank against a wall. Up close, it resolved into a camo-draped cube sunk into the hillside, its edges rounded by drifts. Two steel vents poked through the drift on the roof and puffed thin steam. A short mast with a whip antenna rose beside them, rimed with ice.

  Nia crouched. “That’s the bunker.”

  Ben scanned. No guard tower. No obvious cameras. Just quiet gear doing quiet work — his least favorite kind.

  Julie murmured, “I can see the bunker’s heartbeat on the network. It’s the third ‘brain’ in their cluster. If you unplug the other two pads and this one stays up, it’ll try to take over. We need to either pull its plug or make it do what I say.”

  “Is there a door?” Ben asked.

  “Likely one that leads into a vestibule,” Nia said. “Hartmann’s crew would’ve installed a heat lock — a small entrance, double doors, to help keep the inside warm. Probably a keypad and a badge reader. Maybe even a camera.”

  He slid along the bench, keeping low against the quarry wall, and found the door half-hidden where the hillside met the bunker’s face. A steel slab sat behind a drift, frame set into poured concrete. Somebody had painted the slab white and then covered the edges with fake snow spray to hide the seams. It looked like a magic trick that had fooled exactly zero people with eyes.

  Ben brushed powder from the handle. The hardware was neat and expensive: card reader, numeric keypad, small lens above. He raised a gloved hand and gave the camera a courtly little wave.

  “Let’s see if anyone’s home,” he said.

  No one answered. The light on the reader glowed steady red.

  Nia pointed to a fist-sized black puck beside the frame. “That’s your RF loop. Reader wants a badge ping, and the camera probably runs a face check after the beep.”

  “Great,” Ben said. “I left my evil billionaire credentials in my other pants.”

  “Try your bus token,” Julie said. “I’m going to clone the badge signature we sniffed on the field line and push it to your tap puck. Hold it to the loop like you’re badging in.”

  Ben fished the little interface puck from his pocket — the same one they’d clipped to the drain field — and mashed it into the snow beside the loop. “Ready.”

  “Sending…” Julie said. “Try now.”

  The reader hummed and blinked yellow, likely the color of the controller ‘thinking.’ Then green for ‘go.’ The door’s locking bolts thunked.

  “Camera’s going to want a look,” Nia warned.

  Ben leaned forward, keeping his goggles up but his face mask covering most of his features, and gave the lens the blandest, most bored expression he could manage. A light blinked red, then yellow, then green again. Somewhere inside, a fan whirred.

  “Clear,” Julie said, sounding mildly surprised. “Either their face check is lazy or you look like their crew.”

  “Everyone looks the same in a white parka,” Nia said.

  Ben pulled the handle and eased the door open. A slice of warm air spilled out, smelling like electronics and people. He went in first, and Nia followed, and he let the door fall shut behind them. It thunked. The outside world vanished like someone closed a closet.

  The vestibule was barely wider than a hallway — steel plates on the floor, white composite walls beaded with moisture where warm air hit cold steel. Another door waited ten feet ahead with a smaller card reader. Ben scanned the ceiling: a camera eyeballed the space from a corner.

  “Same dance?” he asked.

  “Try it,” Julie said.

  He touched the puck to the second reader. Another green light. The inner door unlatched with the clean clack of precision hardware.

  CHAPTER 10

  Inside was a room no bigger than a two-car garage. Server racks stood in two neat rows like library stacks, blue LEDs winking in the dim. A workbench ran along one wall, half-covered in open tool cases, heat guns, and spools of fiber. A coffee maker burbled on a shelf.

  The place hummed — warm, dry, filtered. On the far side, a half-dozen monitors showed rough-looking dashboards: pressure graphs, valve states, a simple map of the pads with glowing dots at the bore collars. One screen flashed a silent alarm; someone had muted it.

  And there were two people inside.

  A man in a white parka hunched at the workbench, back to the door, a soldering iron in one hand and a cable in the other. He wore big headphones and bobbed his head to something only he could hear. Beside the monitors, a woman leaned on the rack endcap, tapping on a tablet and chewing gum as if it was the last meal she’d ever eat.

  She looked up right as Ben stepped in.

  They all froze.

  Ben lifted his gloved hand — not to his gun, not yet — and said, with a tone he’d learned as a ranger dealing with poachers, “Door was unlocked.”

  The woman blinked, glanced at the man with the soldering iron, and then at the green light on the inner reader, and then back at Ben. “No, it wasn’t.”

  “Must be broken,” Ben said.

  She stared, chewing to a stop. “Who are you?”

  “Contractor,” Ben said easily. “Maintenance. Got a trouble ticket for your field bus drops.”

  “That’s not a thing we have.” Her eyes flicked to Nia, who stood behind Ben like a taller shadow.

  “You have it now,” Ben said. He nodded at the monitors. “Pressure’s trending stupid. I’m here to make sure your toys don’t blow the top off your trench.”

  The man in the parka finally turned. He was young and beardy and had the fresh-scrubbed look of a startup road warrior — eyes tired, shoulders hunched to protect a laptop he wore like a sacred amulet. He took in Ben’s gear and Nia’s face and the puck in Ben’s hand and did a quick set of math.

  He decided wrong.

  “Security,” he said, grabbing for a handset on the wall. Nia was there before he touched it. She stepped in, caught his wrist with a simple twist that immediately caused him to whimper, and pinned his hand to the bench. The soldering iron toppled in slow motion.

  Ben caught it by the insulated handle and set it down.

  “Don’t,” Nia said softly.

  The woman let her gum creep to the corner of her mouth and leaned away from the table, hands spread a little to show she wasn’t reaching for anything. “You’re not with the park.”

  “Not anymore,” Ben said.

  “Not with Hartmann, either.”

  “Nope.”

  “So what are you?”

  “People who don’t want to die,” Ben said. He pointed at the pressure graph. “You keep pulsing like that and your ‘safemode’ will crack things you didn’t mean to crack.”

  The woman’s eyes sharpened. “You know about safemode.”

  “Damn right I do,” Ben said. “And it’s a bad plan in this place.”

  “You have a better one?”

  Maybe she meant it as a taunt. He took it straight. “Yes, actually. Stop trying to bully the geyser field into your spreadsheet. You ease the pressure down like you’re turning a hot faucet off with an old pipe behind it: slow and steady.”

  The young man glared. “You have no clearance to be here. This is a private facility.”

  “This is a national park,” Nia said. “Private companies don’t get to turn it into a test kitchen.”

  He tugged at his wrist, but she had bone and leverage and didn’t let go. “We have permits.”

  “You have copies of someone else’s signature,” Nia said.

  He fell stubbornly silent.

  Ben rested a hip against the workbench and looked the woman dead in the eye. “What’s your name?”

  “Why?”

  “So I don’t call you ‘hey you’ when I ask you to stop a chain reaction,” he said. “Mine’s Ben.”

  A beat. “Tamsin,” she said finally, with a sigh.

  “Okay, Tamsin,” he said. “This is simple. I need access to your master process. I either use your console nice and neat with your help, or I unplug your toy, and we do it the hard way.”

  “You think you can just… shut it off,” she said, more curious than offended.

  “I think,” he said, “you’ve been told a story about how the caldera will behave if you push the big friendly button on your screen. That story was written by someone who has never watched a mudpot boil a coyote. I have. So I’m not pushing your button. I’m going to run a manual valve sequence that bleeds pressure without hammering the system.”

  Tamsin’s eyes slid to the graph, then to his face. “And if I say no?”

  “Then I call my friend,” Ben said, nodding at the puck, “and she flicks your lights. While they’re dark, your ‘safemode’ tries to help and makes everything worse. I don’t want that. So I’m asking.”

  The young man laughed, a little too high. “You can’t ‘call your friend’ into this box.”

  “She’s already here,” Ben said.

  CHAPTER 11

  Right on cue, the monitors hiccuped. A new window popped into the corner, black background, white text, polite as a librarian.

  REMOTE SESSION REQUEST: CSO OPS. ACCEPT / DENY

  Tamsin stared at it as if it might bite. “How did you — ”

  “Magic,” Ben said. “Or a misconfigured field bus.”

  The man made a show of rolling his eyes. “You’re bluffing. You don’t have the keys.”

  “Try me,” Julie said, her voice booming over the room speakers. “Hi, Tamsin. Lovely cluster you’re running, though some of your packages are outdated. Shame about the safemode voting that’s about to kick you in the shins.”

  Tamsin blinked at the ceiling. “Who — ”

  “My wife,” Ben said. “But she’s way smarter and way meaner than I am.”

  “Hey,” Julie said. “I’m not that much smarter than you.”

  Nia finally let the man’s wrist go. He took his hand back like she’d burned him and cradled it, glowering. Tamsin chewed, thought, and then did something that told Ben she at least understood consequences: she pulled a chair to the console and tapped ACCEPT.

  “Fine,” she said. “You break it, you buy it.”

  “I doubt that,” Julie said. “Ben, I’m in. I see the pad shards and the bunker brain. Give me sixty seconds to copy their config into a sandbox. Then I’ll push a manual bleed sequence.”

  “Hold up,” Ben said. He pointed to the young man. “What’s your name?”

  He didn’t answer. Tamsin sighed. “Oaks.”

  “Oaks,” Ben said. “Anybody else in this bunker?”

  “Just us,” Tamsin said. “The rest are on pad duty.”

  “Armed?”

  “Some,” she said. “Security rotates with the crews. They’re twitchy.”

  “Call them off this building,” Ben said. “Say you’re doing a heat flush and the doors are locked.”

  She held his eyes a beat longer, then picked up a radio and did exactly that — voice even, jargon fluent. The reply came back a second later: a bored acknowledgment, no questions.

  Julie’s voice returned, cool and steady. “Okay, Ben. I’ve built you a slider. Think of the system as four faucets feeding one big pipe. Right now, they’re pulsing those faucets on and off like they’re testing water pressure in a dorm bathroom. We’re going to turn each faucet down a quarter turn every five minutes and watch the pressure drop across the main line. If it spikes somewhere, we pause, let it settle, then keep going.”

  “Translation for the non-plumber?” Reggie cut in.

  “Slowly stop whacking the hot pipe so it doesn’t burst,” Julie said.

  “Perfect,” he said. “Because I just crawled under their Christmas tree and this trunk is uglier than my middle school girlfriend. I’ll sit tight.”

  Ben gestured at the chair. “Tamsin, sit. Hands where I can see them. Oaks, you too. If this works, you get to keep your bunker.”

 

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