Chapter 12: The Five-Minute Countdown

The flashing crimson digits on the main diagnostic terminal ticked downward with merciless precision: 248... 247... 246...
The low, vibrating rumble of heavy seismic charges detonating deep within the mountain foundation began to shake the laboratory floor, sending dust and small flakes of concrete raining down from the vaulted ceiling. Sirens wailed overhead in a rhythmic, deafening shriek that drowned out all normal conversation.
“We have less than four minutes before the blast doors seal permanently and bury this entire complex,” Raymond shouted over the alarms, keeping his boot planted firmly on Henderson’s chest while the director chuckled weakly against the wet floor.
Arthur ignored Henderson entirely, stepping briskly up to the primary control console. His aging fingers flew across the mechanical keyboard with surprising speed, bypassing the locked digital firewalls by directly accessing the analog hard-wire relays behind the terminal panel.
“Artie, what are you doing?” Clara shouted, clutching her bruised wrists as she stood beside him, watching the falling numbers. “Henderson said the override was erased!”
“Henderson only understands software,” Arthur replied coldly without looking up, his eyes darting across the scrolling lines of machine-code reflected in his glasses. “He doesn't know the hardware like I do. We built this facility with a manual fail-safe in case the central computer was ever compromised by enemy agents or corrupt directors.”
Raymond hauled Henderson up by the lapels of his ruined charcoal suit, dragging the wheezing director to his feet and shoving him violently against the edge of the control console.
“Tell us where the manual linkage is, Henderson, or I’ll let the mountain bury you first,” Raymond snarled, pressing the flat of his blade directly against the director’s windpipe.
Henderson coughed, his arrogant composure completely shattered, sweat mixing with the fire-retardant foam on his face. He pointed a shaking, manicured finger toward a heavy steel maintenance hatch set into the floor beneath the primary desk.
“Under... underneath the console,” Henderson choked out. “The manual cable release... but you’ll never reach it in time. The primary shaft is already venting superheated steam.”
Arthur didn't hesitate. He dropped to his knees, ignoring the sharp, protesting twinges in his seventy-eight-year-old bones, and yanked the heavy steel maintenance hatch open. A hiss of hot steam billowed upward, smelling of hot copper and burnt oil. Without a second thought, Arthur reached his bare arm down into the dark, narrow shaft, blindly searching for the heavy brass lever he knew was waiting at the bottom.
“Artie, wait! It’s too hot!” Clara cried out, stepping forward to pull him back.
“Stay back, Clara,” Arthur growled, his jaw set in a line of absolute granite as his fingers brushed against the cold, familiar shape of the brass linkage.
112... 111... 110...
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Arthur gripped the lever with all his remaining strength and pulled upward with a sharp, guttural grunt.
A loud, metallic CLANG echoed through the sub-floor, followed instantly by a massive shudder that shook the entire laboratory. The wailing sirens cut out abruptly, replaced by a heavy, profound silence as the flashing crimson numbers on the terminal turned a solid, reassuring green: SELF-DESTRUCT SEQUENCE ABORTED.