He's not too busy firing that he doesn't have one eye on Tracer, her marker pinging on his visor even as she moves behind him and blinks around the hallway. He turns just in time to see her catch a bullet in the leg--though he can't tell if it's just a graze or not, it doesn't matter.

But she's effective, keeping the attentions of the units trained on her while he mows them down.

It's much easier with only one, and the instant his rockets are back online, he's firing them again, the explosion filling the hallway.