Radio says she was on the "lower level of the parking lot in front of Home Depot." So maybe it was exposed to ground level sighting.
I was wondering if he was getting closer to the people he was murdering, but if he can get a shot across the road, he can still keep his distance from the victims.
Brian Wilson (FoxNews) said a number of marked & unmarked vehicles left the command post travelling at a high rate of speed. He estimated it would take them 30 minutes. I'd estimate a whole lot less than 30 minutes.