Peter uses his webs to pull Constantine out of an impending swarm and they both scramble to safety. Bucky knows that Steve won't back down from a fight, even if it's with bugs. "C'mon punk, fall back!"

He might not know how a force field works but he sure as hell knows when to be on the right side of one.

"The hell did those things come from?" He checks over Steve, then Jack and Sylar who looks.. oh that's not a good look. He trusts him, but temptation is something the guy wrestles with.