They really do need to talk. They may have misinterpreted one another's body language in that last fight, not to mention actual words exchanged. 'Stay down, final warning' sounded like a death threat to Steve, for certain. As for the edge of the Shield aimed at Tony's head...well, he had to get Tony to leave the reactor in his chest unguarded somehow, in order to shut it down. Cracking open his helmet and aiming for his face seemed like the only way at the time.

In all fairness, Steve intended for that potential blow to be misinterpreted as an immediate threat of messy death, so he had this coming. And it would be too much for him to claim he wasn't off the rails by that point. He swears to God he heard Bucky screaming the entire time, but Bucky swore just as seriously he didn't make a sound, he's a trained assassin for fuck's sake, why would his instinct be to yell like a banshee when he's injured?

Screaming, ice, cracked metal, ozone, blood-smell. Falling. All three of them, falling. He's not sure when he hit the ground.

"Jesus Christ," Steve murmurs almost under his breath when FRIDAY mentions Ms. Potts. He hadn't dared to consider--but no news might just mean she got stuck in traffic away from the compound somewhere. He gives a little full-body twitch, as if he wants to run right out and check for her, because the idea of Tony losing literally everyone that matters is more than he wants to consider.

He can't, though. He can't, and FRIDAY is better equipped to search, anyway. Saying something to Tony seems like it might almost be insulting. Cruel. So he follows in silence.

It probably doesn't help Tony's nerves that in the Quinjet Steve can't seem to sit still. He sits for takeoff, fidgets, and rises to pace in a manner that's a bit more frenetic than his normal. And he does catch the shift in breathing and pulse when he looks over Tony's shoulder, glances at him with a soft sigh, and moves back.

"I'm sorry," he says. "I'm not going to hurt you."