His stomach drops. That sound—dull, dead, swallowed—is the sound of metal that has already begun to die. Microfractures spreading along the grain boundary, invisible to the eye, screaming to the ear.
His father called it the coffin note. If you hear it, something is already too late to ignore.
He taps again.
Thunk. Same spot. Same death.
Austin pulls out his phone—cracked screen, prepaid, barely holding a charge—and photographs the bracket. The image is blurry, but he marks the exact bolt position in his father's notebook: Left wing flap bracket number three, inboard hinge. Possible fatigue failure. Confirmed by tap test.
His handwriting looks like his father's. He doesn't notice. He knows what this means: if that bracket fails at speed—at the kind of speed a combat demonstration requires—the flap tears away. The wing rolls. The aircraft becomes a coffin with an engine. Whoever is sitting in that cockpit does not come home.
Austin makes a decision. He cannot walk away.
He steps out onto the active tarmac, into the open, in full view of the security cameras. He approaches the first mechanic he sees, a heavy-set man wiping grease from his hands.
"Excuse me, sir. I think there's a problem with the left wing flap bracket. I did a tap test. The tone is dead at bracket three. It could be fatigue cracking."
The mechanic stares at him: a 19-year-old Black kid in worn sneakers and a faded shirt, holding a brass hammer, talking about tap tests on a restricted military site. The mechanic doesn't even blink before he starts laughing. He calls over two co-workers. They laugh harder.
"Where'd you come from, kid? The junkyard next door?"
"Sir, I'm serious. If you just check—"
"Check what? Your head? Go home, boy."
The noise draws Dale Perkins, head of airfield security. Ex-cop, thick neck, no patience. He grabs Austin by the arm, hard enough to bruise. "You're trespassing on a restricted military evaluation site. You know I can have you locked up for this?"