Wary look x4. He draws back instead of answering, edging that shoulder out of Steve's line of sight like he might reach for it.

Injuries assessed, there is no practical reason for him to stay near Rogers or continue a conversation. He goes back to his chair and the little surgical tray set up there, covered equally in bloody surgical tools and mechanical equipment and sits down with an air of finality, picking up the soldering iron to get back to work.