yes, This video is much clearer. Initially I was ignoring shadow on the top as I was assuming the top structure on the water tower is Lot taller than human size ( 6 or 7 ft). I guess this tower height is of human size. There are 2 shooters on the water tower (one on the rim and other one is top of the tower). With the force the gun produces, I thought it is very risky for the person to shoot from the water tower slope. I guess it is not.
Not convinced, at all. Without extreme zoom, it looks like the dark/shadowed side of the structure on top. When you extreme zoom in, you make anything you want out of it.