It could be him. The shooter is a midget not only in stature but also runs away like one.

If you look at when he takes his top off he's clearly got midget like proportions and the way he moves is like how a midget moves.

That camera is so blurry though it gives little to go on. He might be a little too short. The runner appears to have more bandy legs but it's really hard to tell.

It's not enough to be sure. The video is so blurry you might as well bring in every midget and kid in the block.