Honestly, in the end, we’re lucky he wasn’t that bright. Let’s face it, he owned a plane. I haven’t seen what kind of plane but let’s face it even a cheap ass Cessna filled with gas cans would have killed way more people crashing into a concert than what he did with guns. He chose flash, and a slim possibility of escape, over effectiveness.
Cirrus SR20
“he owned a plane.”
Has that been proven that he currently did? Don’t think so. License expired as well IIRC.