 So our officers in the area started to converge on the building. My understanding is they did a full perimeter walk of the building, weren't able to see up on the roof. Two of the officers went to what appeared to be the lowest point from ground to roof. One of the officers actually boosted the second officer up high enough for him to grab hold of the roof. When he was able to pull his head up over the roof, he did in fact see an individual on the roof with a weapon. He saw the shooter? He did. And what did the shooter do?