“Those ladders are heavy! There’s no way that scrawny 20 year old basement boy carried that, and his shooting gear from the van to the building,& set it up without being seen.”
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Agreed, that ladder was already there.
See my post 98 with the image. In you can supposedly see crooks talking to an officer, but what I noticed most was that this is on the opposite side of the building from where the ladder was, and behind the small child to the right of the officer and crooks, you can see an ac unit that looks like you could use it to climb on to the roof of the small connecting corridor between the buildings. If that is crooks, he was scoping out his roof access since he doesn’t appear to have his ar15 at that time.
It could be that the ladder was in place so that a law enforcement officer could use it to gain access and post on the roof. For whatever reason, assuming an officer was assigned to that post, the officer never took position. The punk shooter simply stumbled upon the ladder an took advantage. It seems crazy, but from what we are reading this whole security situation was a real cluster of incompetence.