That's one thing about this situation that keeps fucking with me. This guy was deliberate in his decision to take that high of ground. (He didn't even have to be that high up i.e 32 floor) Why it bother's me is because at that height I know a couple of things.
1. I'm harder to identify and find. Echo works in my favor in an urban environment.
2. I know first responders (average patrol man) are going to be the first to show up at ground level before the tactical guys come in. That means I know most of them just carry pistols and 870 remmington pump action shotguns. Meaning they are of zero threat to me for returning fire. (on top of which a cop is accountable for *every* round he shoots.)
3. He established platforms and a sector of fire.
4. He took into consideration every little detail, except for the smoke detectors and to be quite honest I doubt anyone outside of a professional hitman would even bother to consider that. Lord knows I actually would not have. That's something that you never run into at firing range, indoor or open. So basically he had all his bases covered except for the smoke detector.
My mind is blown on this one.