From the Commissary to the elevator, Tony's able to walk as normal as possible even if now that the adrenaline is wearing off, he's finding himself having a hard time even just inhaling as he breathes. Once the door closes, he leans against the wall almost casually, but there's a brief moment as he talks where his hand reaches up to his chest, almost as if adjusting the arc reactor - or trying to, anyway - in an attempt to ease the pressure he's feeling, but it doesn't last for long. It's quick, and it's done almost without him noticing. When he does realize what he's doing, he just goes back to his 'relaxed' stance as he speaks.

"I built a lot of weapons," he explains with a small shrug, even if there's a moment where there's shame in his eyes as he says that. Because that time in his life is tainted thanks to Obadiah and his stay in Afghanistan, and... Well. He had raked in a lot of money thanks to his deathly inventions.

"I was a teenager when I built my first one. Quality control was a big thing - I was the...number one weapons manufacturer for the army. I had to make sure they worked." A beat. "I don't like it, honestly. Using guns? I can build one, no problem, and shoot it. But I prefer the blasts my suit can do over bullets."

Which is why his suit doesn't have that as a default and let's Rhodey handle that kind of thing. Tony's more into blasts and explosions.

When the door is open for them to get out, Tony pushes himself off the wall as his arm tries to subtly cradle his side as discretely as possible, but Steve catches that and in no time he's wrapping his arm around his shoulders to ease the weight off his side. Which Tony appreciates but, not wanting to feel like a burden, he smiles faintly over at him. "It's okay, it's not that bad."