Clint had been, as it happened, trying to fix a neighbor's satellite dish (it had, at some point, picked up an extra arrow, somehow), when he saw Jim being dragged into the alley below him by a couple of the goons. He didn't have his bow with him, but he was only a few floors up--and if you got the angle just right, you could throw an arrow pretty damn hard.

"Hey!" As he's demonstrating--the arrow lodges in a forearm pulled back to punch. Had it been fired from a bow, the goon in question would've had an arm kebab. As it is, he's just got a minor flesh wound, and Clint Barton jumping off a fire escape three floors up to land atop a dumpster. "Get the hell away from my building!"

The tracksuits gape for a moment, the un-arrowed one, groaning, "aw, bro, what? There's two of him?!"