"Yeah," Steve replies. "Got all the way down here by myself. It's not that far. You bring Dr. Banner and the Agent Romanoffs home, alright?" He claps a hand on Phil's shoulder. It's supposed to be assuring but...

...It's sort of more like he paws Phil's shoulder because he needs the support.

Ouch. The poison bypassed the serum and didn't even think to make Steve less heavy-handed.