The Extremis search teams came back empty-handed, which Killian received without visible reaction.
"He wasn't in the town," the team leader reported. "No hotel bookings, no car rental records, no credit transactions within fifteen miles. We checked the motel, the diner, the bar—nothing recent. If he was there, he's already gone."
"Or he anticipated you'd be looking." Killian considered the map. A man like Tony Stark, stripped of his armor and working from improvised resources, would still be thinking three steps ahead. He hadn't survived a decade in defense contracting by underestimating opponents who were smarter than him. "Pull the Extremis units back to the facility. Use conventional personnel for the wider search, expand the radius."
"Yes, sir."
"And cover Miami." Killian folded the map. "If he ran, he ran toward a lead. The only lead he has is us."
Rose Hill, Tennessee — Harley's Warehouse
Tony had been at the workbench for three hours and the inventory of things he'd built was beginning to look like a very specific kind of shopping list. Pneumatic nail launcher—range approximately forty feet, pressure tuned to punch through light body armor without requiring direct aim. Compact charge packets with delayed chemical fuses—not elegant, but functional in enclosed spaces. High-output stun unit constructed from two salvaged capacitors and a modified battery bank. And a set of insulated work gloves retrofitted with conductive plates that could discharge on contact.
None of it was Iron Man. But none of it was nothing, either.
He looked at the Mark 42's charging indicator. Still climbing. Four hours from full at current rate, which meant the armor would be flight-ready by mid-morning. The positioning device was already back in his forearm—reinstalled at the workbench with Harley handing him tools and asking questions about nerve conduction with the steady scientific curiosity of someone who'd decided not to be squeamish about the subject.
Tony flexed the wrist. The device registered. Somewhere in the underground garage beneath what used to be his Malibu home, twelve suits were waiting on the recognition signal.
"JARVIS," he said quietly, not wanting to wake Harley, who'd fallen asleep on a folded tarp in the corner sometime around 2 a.m. "What's our Miami address?"
"Rose Manor. Killian's primary AIM facility. The broadcast infrastructure is embedded in the estate's communications systems—our signal trace confirms it." A pause. "Sir, if it's useful context: the facility will have Extremis-enhanced personnel on the grounds. Current count unknown, but based on the operational scale we've observed, conservatively between eight and twenty."
"Eight to twenty people who can melt structural steel with their hands and survive a direct explosion."
"That is an accurate summary of the challenge, yes."
Tony looked at the workbench inventory. The gloves. The nail launcher. The stun unit. He looked at the Mark 42, still charging.
"When I get to Miami, the armor follows. Whatever charge it has by then."
"Understood. I'll monitor the distance and calculate intercept timing."
"And start pulling from the garage array. I want options ready."
"Already queued, sir."
Tony picked up his coat, checked the positioning device one more time, and looked over at Harley. The kid had his arms crossed over his chest and was snoring with complete commitment. Tony found a spare piece of tarpaulin and laid it over him without waking him, then left a note on the workbench that said: Watch the suit. Don't touch the fingers. — Mechanic.
He drove south out of Rose Hill as the sky began its first shift toward gray.
Red Ribbon Corporation Headquarters, New York
Early morning, and the conference room had the particular atmosphere of a space where the coffee had been on for two hours and everyone present was operating on inadequate sleep and adequate purpose.
Eddie stood at the head of the table. All seven Paragons were in their seats: Selene with her hands folded and her posture conveying that she had been awake for this length of time by choice and could remain awake for considerably longer. Michael Corvin beside her. Alexei with a coffee cup he was working on his third refill of. Wesley watching the briefing screen with the flat, focused attention of someone running threat calculations. T'Challa with the printed intelligence file open in front of him. Shang-Chi leaning forward slightly. Chen Haoran in the last seat, reading carefully.
"The ten explosions," Eddie said, "were not conventional bombing attacks. No devices, no shells, no residue because there was nothing to leave behind. The detonations came from within the individuals themselves." He let that settle. "AIM—Advanced Idea Mechanics—developed a biological enhancement formula called Extremis. Among its effects: accelerated tissue regeneration, structural repair at the cellular level, elevated core temperature. Among its side effects: thermal instability under stress conditions. If an Extremis subject experiences significant physical or emotional pressure beyond their threshold, their internal temperature spikes beyond the point of containment. The result is a detonation with a yield exceeding conventional ordnance."
He clicked to the next slide. Aldrich Killian's file—photograph, corporate history, AIM's public-facing operations versus the Extremis program running underneath them.
"AIM also approached Universal Capsule Company's defense division with a proposal to repurpose Baymax units for military applications." Eddie said this without editorial weight, but T'Challa and Shang-Chi both glanced at the file with renewed attention. "The proposal was rejected. Universal Capsule's guidelines on Baymax's medical-only designation are non-negotiable." He moved on. "Our working intelligence, confirmed by two separate sources, places Killian as the architect of the Mandarin operation. The actor portraying the Mandarin is a front. The Extremis failures are being claimed as coordinated attacks to provide cover for AIM's research program and obscure their liability."
"A convenient arrangement," Selene said.
"Very. The Mandarin gets to be a credible terrorist organization. AIM gets operational deniability. The explosions get attributed to a political actor instead of a pharmaceutical accident." Eddie clicked to the facility overview. "Killian's primary base of operations is Rose Manor, Miami. That's our target."
Shang-Chi exhaled slowly. He'd been building toward this moment for weeks—every investigation dead end, every explosion site that yielded nothing, every press statement about the Ten Rings' honor being dragged through the news cycle. The resolution was close enough to feel.
"Full deployment," Eddie said. "All seven. The self-detonation capability makes individual contact with these subjects high-risk. Numbers and coordination reduce that risk to acceptable margins." He closed the briefing file. "The transport is on the roof. We leave in twenty minutes."
In the elevator, T'Challa studied the Extremis technical summary that the intelligence team had attached to the back of the briefing package. The regeneration data was detailed—limb regrowth confirmed in three documented cases, the cellular reconstruction process mapped at a basic level, the temperature curve charted against the detonation threshold.
"Wakanda's medical technology is exceptional," he said to no one in particular. "This surpasses it in one specific dimension."
Alexei looked over his shoulder at the chart. "The explosion problem makes it worthless."
"As a weapon system, yes. As a medical application—if the instability could be eliminated—it would be transformative." T'Challa closed the file. "I wonder what it would take to solve that problem."
Wesley said nothing. He'd already run the math on what an Extremis-enhanced fighter looked like against a conventional combatant, and had filed it under operational irrelevance. The wax bath and the medical pod had higher ceilings and no self-destruct mechanism. This was an interesting academic question, not a practical one for anyone in the Fraternity's orbit.
Chen Haoran, one seat back, was thinking something different.
He'd read the temperature curve twice. His own pyrokinesis had been assessed at a maximum output of sixteen hundred degrees Celsius—that was the ceiling of what he could generate and sustain externally. But his resistance to heat was theoretically higher than his output, because the physics of fire control required it. An Extremis subject running at the documented thermal levels wouldn't burn him. The detonation was the variable. The detonation was the question.
He waited until the elevator opened and most of the team had moved toward the rooftop access before he spoke.
"I'll need Extremis samples from the facility," he said, keeping his voice level. "A few units of the base formula, if they have intact samples. For research."
Selene glanced at him briefly. He met her gaze without elaborating.
She looked away. Her expression said she'd noted it and would revisit it if the results warranted attention.
Chen Haoran followed the team onto the roof, into the wind, toward the waiting aircraft. He was already thinking about who at S.H.I.E.L.D. handled experimental biochemistry, and how long an elimination study on the detonation pathway would take, and what the formula might look like after it had been through their modification process and then into his bloodstream.
The aircraft lifted off and banked south toward Florida as the sun came up over New York.
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