JD,
Sounds like the Sniper had a partial view of Crooks right side of his face and front of a optic, just above the ridge of the 1/12 pitched roof.
It is believed at this time the Butler Police officer that was raised over the roof, catching Crooks attention before the officer dropped back down caused Crooks to rush his 8 (?) shots.
I'm watching the Oversight Hearing now. Cheatle isn't giving detailed answers.
FYI: A 1/12 pitch is the correct slope for a wheelchair ramp.