Las Vegas Mass Shooting

[Mav]

And is Mav prepared to argue a large casino - liked the Mandalay Bay Resort - wouldn't have a heavy duty armed security team, and mega SUPER HIGH TECH camera EVERYWHERE!?

Everywhere save for the rooms themselves.  I assume the Hotel was also a casino but I haven't actually seen that stated. 

Apparently, the rooms were let via Air bNb rather than the Hotel.  Not sure what importance that fact has.

The police may have delayed entry until they were sure the room wasn't booby-trapped.  Weren't they satisfied the shooter was down within minutes of the end of firing?  But is there really any suggestion that the police refused to intervene quickly?

Personally, there's little suggestion that the police are following a script.  They seem open to the possibility of others providing unwitting or deliberate support.  Seems to be all that one could want.