"He sent me back here to get your paper slip," Lin said, her voice shaking violently. "If I go back into that cockpit without your signature, he'll know I broke ranks. He’s already armed the cargo isolation valves on his sub-panel."
"We need the physical barometric drum," I told her, my mind locking into the emergency procedures I had drilled for twenty-eight years. "The electronic log is poisoned. But the mechanical recorder beneath the floor doesn't run on the corporate network. It runs on a clockwork spring and an analog bellows. If that drum shows the cabin seal was bleeding pressure while we were still connected to the jet bridge, Crane's dispatch waiver becomes criminal evidence of premeditated endangerment."
"The inspection hatch is under Row 24," Lin said, glancing toward the drawn curtain separating the galley from First Class. "Right beside the passenger who didn't check in through the gate."
"He knows what's in the hold," I said. "Go back to the cockpit. Tell Vance I dropped my badge behind the rear jumpseat and I'm signing the slip right now. Buy me three minutes before he calls the tower for takeoff clearance."
Lin swallowed hard, nodded once, and slipped back through the reinforced cockpit door, pulling it shut until the heavy deadbolts engaged with a sharp clack.
I tucked the brass key into my apron, shoved the thermal ACARS slip into my breast pocket, and pulled the galley curtain aside.
The main cabin was dim, bathed in the pale blue glow of ceiling night-lights. Rows of passengers sat tilted back in their headrests, their faces slack with fatigue, entirely unaware that the deck beneath their stockinged feet was an incendiary chamber. Near Row 10, a teenage girl shared an earbud with her brother; in Row 17, a young soldier slept with his service cap resting over his chest. If Vance pushed the throttles forward into the winter sky, none of them would see the sunrise over Lake Michigan.
I walked steadily down the center aisle, my service shoes silent on the industrial carpet, until I reached Row 24.
Thomas Sterling had not moved. His scuffed canvas jacket was still zipped tight, his silver pocket watch resting open on his knee. When my shadow fell across his lap, he looked up, his gray eyes catching the dim overhead lights.
I knelt in the aisle beside seat 24C, pretending to check the floor tracking of the seat rails.
"Vance isn't dumping over the mountains," I murmured, leaning close to the armrest. "He's venting forty barrels through the cargo fire-suppression manifold at eighteen thousand feet. He intends to burn the airframe."
Sterling’s jaw hardened, the muscle twitching once beneath his weathered cheek. He didn't blink. Slowly, he reached down to the floor between his boots, clicked open the brass latch of his courier satchel, and withdrew a second carbon document—a certified bill of lading stamped by the Colorado Department of Public Health.
"The solvent isn't just trichloroethylene," Sterling whispered, his voice dangerously calm. "It’s blended with chlorinated esters from the engine overhaul shop. At three hundred degrees, the halon gas in those suppression lines acts as a catalyst. It doesn't extinguish fire; it creates phosgene. The moment Vance flips that switch, he turns this aircraft into an industrial gas chamber."
"I need the barometric drum trace," I said, my fingers finding the edge of the industrial carpet seam beneath Row 24. "Lin gave me Vance's manual bypass key. If I pull the wax paper record from the lower bay, it proves the secondary seal was mechanically pinned open at the gate. But the hatch latch is locked with an FAA maintenance seal."
Sterling slipped his hand inside his canvas jacket and produced a heavy steel punch tool—the kind used by federal safety investigators during crash reconstruction. "Break the lead seal. The court order in my bag gives me executive emergency power over this airframe, but the company revoked my digital keys. The only law that matters right now is the physical trace inside that hull."
The jet banked hard to the left, the twin turbofans whining as Vance swung the Boeing onto the bypass pad of Taxiway Mike. Outside, the bright white runway centerline lights of Runway Thirty-Four Right blazed against the snowdrift. We were next in sequence. Over the cabin speakers, the chime sounded three short, sharp rings—the cockpit's final order for the cabin crew to take their jumpseats for immediate departure.
Waiting was no longer a risk; it was complicity.
I grabbed the corner of the aisle carpet, ripped the industrial velcro from the floorboards with a tearing rasp that made two passengers in Row 23 turn their heads, and jammed the steel punch into the maintenance hatch latch. The lead inspection tag sheared off with a dry snap. I hauled the rectangular aluminum hatch upward, exposing the dark, freezing cavity of the avionics bay beneath the passenger cabin.