Chapter 10 - Across the Frozen Perimeter

The steel pin sheared off under the battering of point-blank lead. David slammed his shoulder against the iron hatch with a guttural roar, using every ounce of his failing strength.
The hatch gave way, bursting upward into the blinding daylight and the freezing rush of sub-zero winter air.
Clara gasped, pulling the freezing air deep into her starved lungs. The shock was immediate, burning her trachea but clearing the suffocating fog from her brain. David shoved Toby up through the opening first, rolling him onto the snow-dusted grass of the airport perimeter embankment, then reached back down to drag Clara into the light.
They were outside the secure boundary, fifty yards beyond the double perimeter fence where the airport met the industrial wasteland of South Gary.
Behind them, on the central apron, a black Bell 429 helicopter had just touched down, its twin rotors kicking up blinding swirls of snow and dried asphalt dust. Half a dozen tactical operators in unmarked black gear were spilling out of the aircraft, forming a sweep line toward the maintenance hangars.
"They're searching the main terminal first," David said, crawling through the drainage ditch to keep their silhouettes below the ridgeline. "They think we're trapped in the basement with the gas."
"Dad," Toby whispered, his face streaked with tears and gray soot from the lift. "My legs hurt. I can't run anymore."
David scooped the eight-year-old up into his arms, holding him against his chest without hesitation. "You don't have to run, buddy. Just hold onto my neck. Don't let go."
They scrambled down the rocky slope of the drainage embankment, the ground slippery with wet clay and dead reeds. Clara's tailored camel coat was ruined, torn at the seams and soaked in muddy sludge, but she didn't care. She checked the pistol in her waistband, ensuring the hammer was secure, and followed David through the culvert pipe that ran beneath the four-lane state highway.
On the other side of the highway sat an abandoned concrete mixing plant, its rusting silos towering like ancient monuments against the gray November sky. Parked behind a row of rotted wooden pallets was the green sedan David had mentioned—a battered, nondescript Chevy with faded paint and rusted wheel wells.
David pulled the keys from behind the rear bumper, unlocked the driver’s side, and slid Toby into the back seat, covering him with a moth-eaten wool blanket.
"Get in, Clara," David said, his hand hovering over the door handle.
Clara didn't move. She stood on the gravel, staring at him. Her breathing had steadied, but the terror had crystallized into something far more dangerous: clarity.
"Where are we going, David?" she asked, her voice deadly level. "You told me we'd run to Maine. Now Corbin has the entire federal apparatus looking for our faces. If we get pulled over by a state trooper who doesn't know any better, they'll shoot us before we can put our hands up."
"We're not running to Maine," David replied, opening the driver's door. "We're going to Chicago."
"Why Chicago?"
David pulled the encrypted titanium drive from his pocket, holding it between two dirt-stained fingers. "Because the only person who can decrypt Corbin's secondary offshore ledger without tripping the federal quarantine protocols is sitting in the federal courthouse on Dearborn Street."
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"Who?"
David met her eyes, and for the first time, Clara saw genuine dread in her husband's expression. "My ex-wife."