There were people walking past the bastard (with rifle pointed toward an empty Police car) and he paid no attention to them. His focus was on uniforms. Thank God one by-stander called 911 to let them know.
Clyde, I do believe a "schooled, licensed" CFA type being at that convenience store might have been able to ambush him. However, just remember, A Sheriff Deputy, with gun drawn and knowing the situation, was taken out.
BTW, that shot that took the perp down is un-stinking-believable!