He changed back to human. "S-son of a b-b... Ow.. Gotcha. I know where you are.." he looks at a building where he knew the bullet was shot from.

((Knowing that you would hide your tracks, he found that the sound would be hidden from the shooter. Thus so would the shot site. You would shoot it at a surface that could reflect the bullet. Thus I simple looked for the best possible shooting site.))