“Still stubborn, I see,” Leon noted, eyeing the beard Tony had let completely go to seed.
“Your signature goatee has gotten a bit out of hand.”
Tony didn’t miss a beat.
“I didn’t know my brother had developed a habit of flying internationally without a shirt.
Fascinating choice.”
He never let one land unanswered.
That was the thing about Tony in an argument — he had a response for everything, produced without hesitation, at two in the morning, in a cave in Afghanistan, with months of captivity behind him and what would likely be a small war in his immediate future.
He seemed to find it invigorating.
Something in him hasn’t changed, Leon thought, watching the familiar quickness in his eyes.
Something that is very specifically Tony and nothing else.
After all, Tony was his only family in this world.
Sometimes Leon could feel that most clearly in exactly this — in the specific rhythm of a back-and-forth that both of them could do half-asleep, that had its own grammar built from years of living under the same roof.
“While we’re at it,” Tony continued, and Leon could already tell from the shift in his tone that he’d moved to a new grievance, “let’s address the other thing.
‘I have very good ears now.’ Really, Leon.
I have two PhDs.
Sound is a mechanical wave.
It requires a medium to propagate.
There is no medium in space.
This is not a controversial position — it’s in the first week of every physics course that has ever been taught.” He pointed.
“If you had attended class above the molecular level, you would know this.”
“I attended class.”
“Physically.
You were physically present.”
The rhythm broke.
Tony finally remembers.
“What about Pepper, she doesn’t know about your power,” he said, after a moment that was slightly longer than his usual ones.
He looked at Leon directly.
“Did she contact you?
Did she know you were—”
“She didn’t contact me.” Leon shook his head.
“She knows about the attack but still don’t know about your situation and I think she didn’t want to be the one to tell me you’d been attacked.” He paused.
“But I did hear your voice praying, saying ‘Leon—I need you to take care of yourself, okay?
I don’t… I don’t know if I’m gonna make it back from this one’ ”
Tony stared at him.
“I just explained to you why that is not—”
“Impossible, yes.
I heard you.” Leon tapped his ear.
“It still happened.”
Tony closed his mouth.
Leon could see him doing the math — weighing the established laws of acoustic propagation against the list of things that had already happened tonight that those same laws had no framework for.
The math was, apparently, not landing anywhere comfortable.
Leon had stopped tracking the conversation, because he was looking at Tony’s chest.
Not the surface of it.
Through it.
He’d adjusted his vision the same way he’d adjusted it to find this cave, calibrated now for close range and clinical precision.
He could see the musculature, the ribcage, the arc reactor embedded in the sternum and the magnetic field it was maintaining — and around that field, suspended and contained, held a finger’s width from the pericardium—
Thirteen pieces.
Small.
Irregular.
Metal.
The kind of fragments that, if the magnetic field failed for any reason, would cut cardiac tissue before the nervous system had time to report it.
Leon’s brow tightened.
“Tony.” His voice came out quieter than he’d intended.
“You don’t look well.”
“I look great, actually—”
“The shrapnel.” He kept his eyes on Tony’s chest.
“I can see it.
Thirteen pieces sitting around the pericardium — the electromagnet is holding them, but that’s not a solution, that’s a stay of execution.” He looked up.
“They did this to you.”
Not a question.
The flatness in his voice had a temperature.
Cold.
Very controlled, and very cold.
Tony held his gaze for a beat longer than usual.
Something moved in his expression — a brief, visible recognition of what was underneath Leon’s composure — and then he looked away first.
“Minor,” Tony said.
“I had it managed.
But—” a beat, “—you came at the right time.
The plan was tomorrow morning: suit up, take the exit route, keep Yinsen’s exposure to hostile fire to a minimum.
Now we can take a considerably less minimal approach.” He stood, rolling his shoulders — and stopped, mid-roll.
“Oh.
Yinsen.”
He pressed a hand to his forehead.
“Yinsen — where are you — are you—” He turned, scanning the cave, and pulled up short.
The slightly bald, middle-aged man in the vest had been standing six feet away from both of them for the better part of the last ten minutes.
He spread his hands, unhurried, and waited for Tony to finish the question.
“Still awake,” Yinsen said.
“I was here from the moment your brother came through the ceiling.”
“Right.” Tony produced the specific smile he used when he knew he’d done something socially inadvisable and had decided that projecting confidence was preferable to acknowledging it.
He stepped sideways and waved a hand between them.
“Yinsen, this is Leon Stark.
Leon — Yinsen.
My…” A brief, honest pause.
“My friend.
He kept me alive in here.”
Leon shook Yinsen’s hand.
The grip was firm, practical.
“I didn’t expect Tony to find anyone worth trusting in a place like this,” Leon said, and meant it.
“You’ve been taking care of him.
That’s not a small thing.”
Yinsen started to deflect.
Leon raised a hand.
“Don’t.
You kept Tony alive.
That makes you my friend — no further qualifications needed.” He turned toward the cave’s sealed exit, the heavy door with the bolts on the outside.
“What we need to do now is walk out of here and make sure everyone responsible for this ends up somewhere they can’t leave.”
His face was completely still.
His eyes were not.
Yinsen said, carefully: “Their firepower outside is—”
Tony cut in, already moving toward the suit with ease.
He laid his palm flat on the chest piece.
“Look at this, Leon.
I built this in a cave.
From scrap.
While injured.” A beat, letting that register.
“Even without you, Yinsen and I were walking out of here tomorrow morning.
These people have no idea what’s coming.”
Leon looked at the armor.
He looked at Tony.
Tony had the particular brightness in his expression.
“Keep it for later,” Leon said, not unkindly.
“I’ll take the front.
You follow.”
“‘Keep it for later’—” Tony’s voice went up half a register.
“Leon, I understand you were an average student and advanced engineering concepts may not have fully—”
“Tony.” Leon glanced down at himself.
“I flew here from space forty thousand kilometers away.” He held out both arms, indicating his current state of dress, which was the same pair of pants that had been drifting past his elbow in zero-g.
“In these.
Which are undamaged.”
The silence that followed had a texture.
Tony looked at the pants.
He looked at the distance from space to their current location.
He looked at the suit he’d assembled from salvaged components in captivity.
He ran the numbers,.
His mouth opened.
Closed.
“…You take the front,” he said.
“Thank you.” Leon paused.
“But there’s one more thing first.”
He looked at Tony’s chest.
“One more—”
Leon’s right hand settled on Tony’s shoulder, light and exact.
His left hand moved.
Tony registered a tightening — sharp, immediate, the beginning of pain — and then it wasn’t there.
It had arrived and departed in the time between one heartbeat and the next, so fast that his nervous system was still composing the signal when the sensation was already over.
Leon straightened.
“One,” he said, tilting his palm.
“Two, three…
twelve, thirteen.” He looked at Tony.
“You’re remarkably difficult to kill.
I want you to know I find that deeply reassuring.”
Tony looked down at his chest.
His shirt had small, precise holes in it — a dozen and more, clustered around the left side of the sternum, each one clean-edged, each one the size of a fingertip.
The arc reactor was still there, its blue light steady in the center of his chest.
He pressed two fingers to the skin beside it.
Smooth.
Closed.
No pain.
He looked up.
Leon’s open palm held thirteen fragments of shrapnel, each one small and irregular and dull with old blood.
“I—” Tony said.
Leon folded Tony’s fingers around them.
“Keep those,” he said.
“Something to hold onto.
A reminder of the day you learned what it actually costs to be responsible for things bigger than yourself.” He turned toward the door.
“You’re welcome.”
What Tony perceived as a single moment had, in mechanical terms, been several: the bio-force field extending through the chest wall, locating each fragment and holding it fixed; incisions made with fingertip precision, each one millimeters wide and no deeper than necessary; the removal, complete; heat vision applied from the inside out, tissue closing layer by layer until the skin was sealed and the bleeding was a memory.
Beginning to end, under a microsecond.
Nothing in Tony’s nervous system had been fast enough to log it as anything more than a sensation that had briefly threatened to become pain and then, inexplicably, hadn’t.
Tony stood still with his fist closed around the shrapnel.
He had things he could have said.
A rebuttal to the “finally learned responsibility” remark would have been the obvious place to start.
He didn’t say any of them.
“Let’s go,” Leon said.
“It’s time to go home.”