I wonder if the killer was from out of town? Seems if he was local, he would have known there was always a strong police presence in that neighborhood on a Saturday night.
The El Paso, TX domestic terrorist commuted in from Dallas.
James Fields, Jr., the killer who drove his car into protestors in Charlottesville, VA and who was from Maumee, OH drove all the way to Charlottesville to engage in his terrorist attack.
It's possible the Dayton terrorist came from elsewhere, too, but didn't research his target. Fortunately for others.