Dragon-busting was definitely more Roxie's style than his, though he'd fought one during the dragon invasion of New York. Granted, he'd ended up being temporarily infected with the Bubonic Plague before his partially alien/super-human immune system had burned it out...

"Can you hold it off?" he shouted. "The others will be here soon! I'm going to try and get past it!"

Sometimes, as Uncle Steve had taught him, you had to focus on the goal of the mission, and trust everyone else to do their parts.