"That's it, buddy. Come on. Eyes on me. We'll do this together." Steve could imagine breathing hurt, for any number of reasons - the top one being that bloodstain on his shirt. But they'd deal with that in a minute. First, they needed to get Bucky calmed down.

He waited until he was sure Bucky was watching him, then took a deep breath, encouraging him to do the same. Hold if for a few seconds, then breathe out. Then again. And again. "You're doing it. Just keep it up. It'll hurt less, okay? Trust me." He wanted to say they'd get him looked at in a second, but he wasn't sure that was a good thing to say. He'd tell Bucky when he called for help, but he was getting ready to, slipping his phone out of his pocket but not dialing yet.