Re: First Aid
Bucky... is, too. He doesn't like it, and wouldn't have agreed to it, but he also doesn't want to compound Steve's as yet unknown problems by being ungrateful. He tries not to think about it - which is harder when the thing you're trying not to think about is attached to your shoulder. (He does, however, offer to let Sam borrow the outfit any time he wants. In case he wants to mix it up with those red goggles.)
Bucky's knowledge on the subject is pretty dated -- like, 1940s dated, since someone getting hurt was kind of the point of his Hydra missions, and it was generally felt that his offbrand serum would keep him alive long enough to do repairs -- but field medicine probably hasn't changed that much. He'd agree to check out another section after a thorough demonstration. If there's one thing here that Bucky knows absolutely fuck-all about, it's definitely fishing.