I lived in Vegas back then and a number of locals reported a chopper picking up someone on the roof that night. A cab driver had a video camera recording of that night, well sound of this one really, when he was in the pick up area at Mandalay Bay, and one could clearly hear 2 guns shooting, not one.

Anyone who knows anything about guns would not and could not buy the BS story of a "madman bringing 3 dozen semi-autos to do the deed". Takes way more time to step away from the window and grab another rifle than simply drop a mag and slap another one in. That in itself never made any sense, in any shape or form.