How do I know? Because “wait, let me get my shoes” is classic prose. It was scripted, including the dead firefighter. Sacrifices had to be made. The SS would never let him pose for a photo op after an active shooter was shot. They are inherently competent just like all long standing US institutional forces. There is no other explanation.
I still firmly believe it was an accident and will until I see a shred of evidence otherwise.
The real target was the dead hog.