The sound of gunfire makes Derek's ears ring because his hearing is still hyper-focused, and he has to clutch Stiles' shoulder for support as he shakes his head to clear it.

Then he's running off, pushing past people who are fleeing in the opposite direction. "That's one way to draw attention to ourselves."

He watches the guys run down the alley and out of sight before stepping up and putting his hand on the side of Castiel's neck, veins in the back of his hand going black as he takes his pain. "Castiel, man," he says as he lets go, not wanting to touch him too long with an angry, trigger happy Dean nearby. "You gotta stop opening up veins in public."

He steps back to give them their space, and even though he can smell him and hear his heartbeat, he still turns to look at Stiles to make sure he's okay.