Floors 35-39 on that building are actually an entirely separate hotel, The Four Seasons, which has its own elevator banks but shares the same fire stairwell.
As to the “ISIS did it theory” The Four Seasons is half-owned by a Saudi prince and is a favorite place for Saudis to say in Vegas, and therefore must have a lot of muslims on staff.
Maybe the escape plan was up?
He was certainly spending like a Saudi prince.
One guy who competed against him in a slot tournament for $100,000 prize indicated the basket was full of tickets with Stephen Paddock’s name on it - he knew he was gonna win - and he did.
Paddock was playing a very-high-limit video poker machine at the rate of $120,000/hr according to that article (don’t have link now). Paddock would often speak of playing for 12-14 hours. That is what I call some serious cash. Or bank. Or whatever term one likes.
Let’s put it this way Wahabi Saudi Prince goes full auto on Christian infadils, party goers just like in Paris then shoots his American enabler(either before or after the shooting, then skips up the stares to his room. The ‘lonewolf’ American gets the blame and the prince enjoys the death and chaos he created.