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The thick, acrid smoke from the melted blast door was still swirling through the corridor when Maria Hill's voice sliced through the chaos.
"Iron Man, stand down immediately!" she ordered, her voice echoing sharply off the concrete walls. She didn't hesitate, raising her standard-issue service pistol and locking both hands around the grip, aiming directly at the center of the crimson-and-gold chest plate. "Right now, Stark!"
Tony didn't even slow his pace. He kept moving forward, his heavy, motorized footsteps ringing out with a terrifying regularity.
"The only people who need to stand down are the ones in front of me," Tony replied, his voice amplified and distorted by the suit's vocal processors. Behind the dark tint of the visor, the glowing eye-slits burned a dangerous, brilliant crimson through the thick haze.
He stopped just a few meters from their defensive line, his armored posture completely unyielding. "I am only going to say this one more time."
"Move."
An absolute, suffocating silence fell over the hallway. Not a single S.H.I.E.L.D. agent lowered their weapon. No one took a step back, and no one broke formation. They stood their ground, willing to die for a facility they didn't even fully understand.
Inside the helmet, Tony let out a heavy, bitter sigh. "Yeah," he muttered quietly to himself. "I figured you'd choose the hard way."
With a series of sharp, mechanical clicks, small hidden compartments snapped open all across the shoulder and thigh plating of the armor. A split second later, a loud *thunk-thunk-thunk!* echoed through the corridor as multiple tactical canisters were launched directly into the dead center of S.H.I.E.L.D.'s tight defensive formation.
The veteran agents recognized the distinct shape of the projectiles instantly, their training kicking in.
"Tear gas!" one yelled.
"Masks on! Move, move, move!" another screamed.
But they were already too late.
The canisters violently detonated with a massive *hiss!*, unleashing dense, choking clouds of white chemical irritant that flooded the narrow corridor almost instantly. In a matter of seconds, all visibility was completely wiped out. The carefully organized, professional defensive line dissolved into pure, unadulterated chaos as agents began coughing uncontrollably, stumbling blindly through the thick, blinding fog. Eyes burned like fire, lungs seized up in a desperate search for clean oxygen, and the very air inside the hallway became completely hostile.
But these were S.H.I.E.L.D. agents, not fresh recruits. Even while half-blinded, choking, and suffocating, their muscle memory took over.
"Open fire!" Maria Hill's frantic command cut right through the coughing and confusion.
Instantly, gunfire exploded throughout the narrow hallway, the deafening roar of automatic weapons echoing off the walls. Bright, violent muzzle flashes pierced through the thick white smoke as a literal storm of high-caliber bullets raced blindly toward the entrance.
*CLANG! CLANG! CLANG!*
The heavy rounds struck the titanium-alloy armor and bounced away harmlessly, sending a dazzling shower of bright sparks scattering across the dark corridor. Tony didn't even consider dodging or taking cover. There was absolutely no need to. The bullets couldn't even scratch his paint job, let alone stop his momentum.
With a chilling, mechanical certainty, he simply kept walking forward. Step by step, he marched directly through the blinding smoke, through the frantic gunfire, and through the absolute chaos. The sight was profoundly terrifying for the guards; it was like watching a literal tank march through a thunderstorm, entirely unaffected by the elements.
Gradually, the desperate barrage began to weaken, the gunfire sputtering out until it stopped entirely.
By the time Tony stepped cleanly out of the dissipating gas cloud, the fight was already over. S.H.I.E.L.D. agents lay scattered all over the concrete floor. Some were coughing violently, their hands pressed against their throats, while others were desperately crawling through the floor to catch their breath. A few had completely passed out from the intensity of the chemical agent. Without their protective gas masks ready in time, not a single one of them had been able to maintain any sort of combat effectiveness. The perimeter defense had completely collapsed.
"Outer perimeter successfully secured, sir," Jarvis reported smoothly inside the helmet.
Tony didn't waste a single glance on the groaning bodies on the floor. He ignored the discarded weapons, ignored the flashing red sirens, and ignored everything that didn't bring him closer to his real objective.
"Jarvis," Tony muttered, his voice cold.
"Yes, sir?"
"Give me a full structural scan of the building."
"Activating deep-penetration sensors now."
A soft, electronic chime chimed inside the helmet, and the entire heads-up display instantly transformed. The solid concrete walls in front of him became transparent, glowing overlays. Heavy steel reinforcements faded into thin air, and the thick, armored barriers dissolved into bright blue, 3D wireframe outlines.
The entire secret facility unfolded right before Tony's eyes like a massive, holographic blueprint. He could see every hidden hallway, every sub-level elevator shaft, every automated security checkpoint, and every single living heat signature currently moving inside the bunker.
On the heads-up display inside the helmet, the Winter Soldier practically lit up like a flare in a pitch-black room. His cybernetic arm was completely impossible to miss. Because of its incredibly dense titanium-alloy construction, the prosthetic limb appeared as a brilliant, glowing white marker on the structural scan, standing out against every other organic heat signature inside the bunker.
Tony immediately shifted his weight, changing direction in a split second. His heavy, mechanical pace quickened, each motorized step echoing through the sterile concrete corridors like rolls of distant thunder.
Several S.H.I.E.L.D. security teams desperately tried to intercept him along the way, flooding the hallways with their weapons drawn. None of them managed to slow him down for more than a few seconds. Tony wasn't interested in fighting them, and he certainly didn't care about their tactical formations. They weren't his objective.
Using his hydraulic-assisted suit strength, Tony casually swatted the agents aside, sending them tumbling across the floor without inflicting any fatal injuries. He was treating them like minor clutter. Automated security doors were violently ripped off their tracks. Heavy metal barricades were smashed into pieces. Iron Man tore through the heart of the facility like an absolute, unyielding force of nature.
And eventually, he reached the very end of the trail.
*BOOM!*
The final reinforced sub-basement bulkhead exploded inward under a massive repulsor blast. Jagged, twisted sheets of heavy military metal crashed violently across the floor, kicking up a thick cloud of sparks and concrete dust.
Standing on the exact other side of the smoke was a single man.
Bucky Barnes.
The Winter Soldier remained perfectly, eerily calm. A compact tactical submachine gun rested loosely in his hands, his finger resting lightly against the trigger guard. His expression didn't even twitch as the wall collapsed. There was no visible fear in his eyes, no sudden panic, and absolutely no hesitation. His piercing blue eyes locked right onto the glowing, crimson gaze behind Iron Man's metallic faceplate.
For a long, heavy moment, neither man made a move. The silence in the ruined room was deafening.
Then, Bucky spoke, his voice remarkably steady. "So, you're the one currently destroying Fury's floor plan."
Inside the armor, Tony's breathing echoed loudly through the audio pick-ups. It was slow, heavy, and incredibly dangerous. He felt the blood rushing to his ears, the image of his mother's final moments flashing behind his eyelids.
"You murdered my mother and father," Tony growled out. The words emerged from the suit's vocal synthesizers like a guttural, animalistic snarl. The sheer, suffocating amount of hatred packed behind the accusation seemed to physically vibrate through the walls of the room itself.
For the very first time since Tony had blown the door open, Bucky's stoic expression actually shifted. But it wasn't a look of guilt, or smug satisfaction, or fear.
It was genuine, total confusion.
"I don't remember that," Bucky said flatly.
He wasn't trying to be clever, he wasn't playing a psychological game, and he definitely wasn't mocking Tony's pain. He honestly, truly had zero idea what the armored avenger was talking about. Those dark, bloody memories were completely gone, ruthlessly stripped away and buried beneath layers of Simon Boren's deep psychological reconstruction. The countless horrific atrocities Bucky had committed during his dark years as HYDRA's personal phantom had been entirely erased from his conscious mind.
Even though Tony knew that, as Simon had once mentioned it to him, it still wouldn't have mattered even a fraction of a percent. Because Tony had seen the raw footage with his own two eyes. He had watched Howard Stark's head get crushed. He had watched Maria Stark get choked to death. The bloody evidence was permanently burned into his memory forever.
"I don't give a damn what you remember," Tony whispered.
Instantly, a bright, blinding blue light began to gather inside Tony's palms. The high-pitched, lethal whine of charging repulsor weapons filled the small room, vibrating the air.
"They've waited decades for justice," Tony roared, his heavy metal fists clenching tight. "And today, I'll finally give it to them!"
*WHOOSH!*
With a deafening burst of thruster energy, Iron Man launched himself forward. The glossy crimson-and-gold armor transformed into a high-speed missile, his heavy gauntlets shooting straight out toward Bucky's chest, intending to completely end the assassin's life in a single, crushing strike.
But the Winter Soldier wasn't an ordinary human opponent. Seventy years of continuous, high-stakes warfare had sharpened his combat instincts into something almost inhuman.
The exact millisecond Tony's thrusters ignited, Bucky reacted. He didn't try to step back; instead, he pivoted sharply on his heel, using the momentum to swing his heavy titanium arm in a brutal, blinding counterattack.
*CLANG!*
The sound of metal slamming into reinforced metal rang out through the sub-basement like a church bell. The titanium fist connected squarely with the side of Iron Man's heavy helmet.
Tony staggered half a step to the side, his boots scraping against the concrete. It wasn't because the physical strike had actually damaged the high-tech suit; it hadn't. The advanced titanium shell easily absorbed almost all of the raw kinetic force instantly. But the sheer, monstrous power behind the super-soldier's blow was just enough to violently disrupt Tony's forward momentum.
And for an elite, seasoned killer like Bucky Barnes, half a second of disorientation was an absolute eternity.
The Winter Soldier moved immediately, using the window of time to his advantage. A small, metallic cylinder slipped from his right hand, dropping to the floor. It bounced once, then twice, right beneath Tony's boots.
Inside the helmet, Tony's eyes widened in sudden realization. 'Shit, a flashbang.'
*BANG!*
Bucky didn't waste a breath. He spun around on his heel and sprinted at full speed toward an auxiliary escape exit at the back of the room. He wasn't foolish enough to stand his ground and exchange punches with a walking tank. Super Soldier Serum or not, fighting Iron Man head-on in an enclosed space was a guaranteed death sentence. Survival meant keeping mobile. Escape meant finding another opportunity to strike.
As his boots cleared the auxiliary doorway, Bucky's hand flew directly to a small tactical device attached to his combat belt. A remote detonator. Without stopping, he slammed his thumb down on the primary trigger.
*BOOM!*
A massive, deafening explosion violently shook the entire sub-section of the underground facility. C-4 charges that HYDRA had hidden throughout the structural pillars of the room detonated simultaneously in a blinding flash of orange fire.
The thick concrete walls instantly ruptured, support columns shattered into dust, and the heavy ceiling completely caved in. Thousands of pounds of solid concrete, jagged rebar, and twisted steel came crashing down from above, burying Iron Man beneath a massive avalanche of heavy debris.
The entire room completely vanished under a mountain of rubble, sending a violent shockwave of gray dust exploding outward in every single direction. The floor trembled so violently that it felt like a localized earthquake. For several long, suffocating seconds, everything went dead silent.
Bucky knew better than to expect a simple cave-in to actually destroy Tony's advanced armor. He wasn't stupid. But crushing his target was never the primary goal of the explosion. Delaying him was.
And in the high-stakes line of work the Winter Soldier operated in, a few extra seconds of breathing room could mean the literal difference between a clean escape and a body bag. As the massive cloud of toxic gray dust began to rapidly expand through the corridor behind him, the assassin kept running through the dark, knowing those precious seconds wouldn't last for long.
*CRASH!*
The massive mountain of concrete and twisted metal suddenly exploded outward in a violent shower of gray debris. Iron Man forced his way free, his armor utilizing pure, overwhelming hydraulic strength to smash through the cave-in.
Thick dust swirled heavily through the ruined chamber. Tony stepped cleanly out of the gray cloud, his glossy paint job scratched up, but his internal systems remaining completely, beautifully functional. His glowing eyes immediately scanned the wreckage, hunting for any sign of the Winter Soldier.
Then, he stopped.
Blinded by rage as he was, Tony wasn't stupid. Sprinting blindly down a dark, narrow escape tunnel wasn't the smartest move against an elite phantom like Bucky Barnes.
"Jarvis," Tony muttered.
"Tracking subroutines are already active, sir."
The high-tech visor instantly shifted modes, flooding Tony's vision with a bright thermal imaging overlay. Almost instantly, a vivid, glowing orange silhouette appeared inside the facility's lower access tunnels.
There he was, moving incredibly fast.
But as Tony zoomed in on the thermal feed, his eyes narrowed at a highly specific detail. Bucky wasn't just running for his life; he was stopping every few meters to plant tactical explosives along the walls. It was a perfectly calculated gauntlet of traps designed to blow the tunnel to pieces the second Iron Man followed him inside.
Beneath his metallic helmet, Tony's lips curled into a cold, dark smirk. 'Clever bastard,' he thought. 'But I have absolutely zero interest in playing by your rules tonight.'
*WHOOSH!*
The heavy thrusters on his boots roared to life, instantly spiking to maximum power output. Instead of diving into the dark tunnels, Iron Man launched himself straight upward like a rocket.
Solid concrete shattered into dust, and thick steel support beams snapped like toothpicks as Tony violently blasted his way straight up through the ceilings of the facility, floor by floor. A second later, he broke through the roof and burst into the crisp open air.
Bright sunlight reflected brilliantly across the crimson-and-gold armor as Tony climbed higher and higher into the sky. Thirty feet. Forty feet. Fifty feet. From this bird's-eye view, the entire S.H.I.E.L.D. compound unfolded beneath him like a giant tactical map.
Absolute aerial superiority. Now, the chessboard belonged entirely to him.
His advanced sensors swept cleanly across the perimeter. Then…
*Beep!*
Target acquired.
Down below, the rear cargo bay doors of the bunker violently burst open, and a heavy tactical motorcycle shot onto the concrete tarmac at full speed. Bucky Barnes was making his final break.
Tony didn't waste a single breath speaking. He didn't issue a warning over a loudspeaker, he didn't demand a surrender, and he didn't hesitate. A small shoulder compartment on his armor slid open with a slick mechanical hiss.
*THUNK!*
A single micro-missile was launched into the air. The projectile streaked across the sky, leaving a brilliant, spiraling trail of white smoke behind it as it locked onto the motorcycle.
Down on the tarmac, Bucky noticed the incoming threat immediately. But he was already too late.
*BOOM!*
The missile struck the speeding motorcycle directly. A massive, fiery explosion instantly consumed the entire vehicle, sending a violent wave of orange flames and jagged shrapnel scattering across the pavement in every direction.
But the Winter Soldier's physical reflexes were borderline absurd. A mere fraction of a second before the missile made impact, he had violently launched his body off the bike. He twisted through the air, hit the solid ground hard, rolled through the dirt to absorb the kinetic shock, and immediately snapped back up into a perfect combat crouch.
Thick smoke drifted from his torn tactical gear, and black soot completely covered his face, but he was alive.
Tony slowly, menacingly descended from the sky, his repulsors glowing with a dangerous blue light as his weapons remained fully armed. Bucky glanced upward, his breathing heavy as reality finally began to settle in.
He wasn't escaping this. Not on foot, not on a bike, and certainly not from Iron Man. A human being could outrun another person, sure. But nobody on Earth outran a localized, genius-built guided missile system.
But then…
*THRUMMMMM!*
A brand-new, deep mechanical vibration cut cleanly through the quiet battlefield. Both men instinctively looked up at the sky.
A sleek S.H.I.E.L.D. Quinjet came screaming across the facility perimeter, flying incredibly fast, low, and aggressively. The massive rear deployment bay doors hissed open in mid-air, and a lone figure immediately jumped out into the empty sky.
He was dozens of meters above the solid ground. There was no parachute on his back, and there wasn't a single shred of hesitation in his posture. The figure plummeted toward the tarmac like a stone. Then, a mere millisecond before he hit the deck, he swung a circular metal shield into position beneath his body.
*BOOM!*
The concrete ground fractured under the immense force of the landing, but the incoming kinetic energy was perfectly absorbed and dispersed through the rare vibranium alloy. The man rolled smoothly across the pavement, using the momentum to rise seamlessly onto his feet.
He stood tall, planted directly between Iron Man and the Winter Soldier. A star-spangled uniform, a legendary shield, and a fiercely determined stare. Captain America had officially arrived, and the entire energy of the battlefield instantly shifted.
*SWOOSH!*
Suddenly, another shadow descended rapidly from above. A massive, sleek falcon swooped down toward the tarmac, its feathers shimmering before it smoothly morphed and shifted back into human form. Clint Barton hit the ground running, instantly pulling his high-tech bow from his back and notching a specialized arrow in a single fluid motion, effectively shielding Bucky's exposed flank.
For a brief, agonizing moment, nobody moved. The wind howled across the concrete.
Then, Steve slowly turned his head around. His eyes landed squarely on the soot-covered, long-haired assassin standing right behind him.
In that exact second, everything stopped. The world, the battle, the mission, all of it completely evaporated into background noise. Steve's breath caught violently in his throat, his eyes widening in pure, unadulterated shock. Disbelief, hope, and an entire lifetime of buried grief came crashing into his chest all at once.
Because standing right there, alive, breathing, and completely real, was the childhood best friend he had buried in his heart decades ago. The brother he thought he'd lost to the icy depths of a ravine in 1945.
"...Bucky?" The name escaped Steve's lips as a fragile, broken whisper.
Steve took a slow, trembling step forward, his heavy vibranium shield lowering slightly toward the ground. "Is it... is it really you?"
The Winter Soldier stared back at him. For the very first time since Tony had blown his way into the bunker, Bucky's cold, emotionless assassin mask completely cracked. Something powerful stirred deep beneath the surface of his brainwashed mind. Recognition, agonizing confusion, and decades of deeply buried memories were violently clawing their way upward to his conscious mind.
Neither man spoke. The silence stretched painfully between them, heavy with the weight of seventy years of loss, forced separation, and unanswered questions. All of it was compressed into a single heartbeat.
Then, finally, Bucky's lips parted. His voice was incredibly rough, shaky, and uncertain, like someone reaching into the dark toward a completely forgotten life.
"...Rogers."
The single word hit Steve harder than any super-powered punch ever could, his eyes turning glassy.
And hovering fifty feet above them in the sky, Iron Man watched the beautiful, emotional reunion unfold. Inside the cockpit, Tony's heavy metal fists slowly clenched until the titanium plating groaned under the pressure.
Because while Steve Rogers was looking at a long-lost brother... Tony Stark was looking directly at the monster who had murdered his mother and father.
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Next Chapter: Arms-Arms VS. Tremor-Tremor
Next Next Chapter: You Die By The Sword
Next Next Next Chapter: The Parkers Visit
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