I am become more convinced each day as something 'new' is revealed or leaked about this event - that this was some kind of shadow-gov black op, done for more than nefarious purposes.
Maybe seeing if they can off a targeted group of people in a mass casualty event - and then see if get away with it, so they can plan greater and grander 'events'?
After all, the mob runs Vegas and there are cameras everywhere - and yet this "guy" is a virtual ghost and nothing is known about the "perp" except what is fed to us.
In this case assuming the worst might be to our best advantage, since the government local and fed can no longer be trusted with telling us anything but false narratives/ aka lies to push whatever political ends they seek.