First of all, the timeline is obviously still not entirely confirmed, so there is no knowing for sure exactly what happened and when.
Secondly, we don’t know what Mandalay told the police and when. Someone could have called 911 and told them detailed information right away, and that information not have gotten out on the public police radio for one reason or another. Alternatively, Mandalay might never have gotten that information to the police and they might have just figured it out themselves.
It’s way too early to start being certain about who is going to be found guilty of what.
MGM is starting to release some of their recorded communications, through this link. https://www.today.com/video/las-vegas-shooting-new-audio-captures-first-shots-fired-1069738563795
NBC didn’t play the complete unedited radio recordings, just the beginning at 9:59.The SWAT team got there 19 minutes later.
The maintenance worker radioed to his superiors and said, “Call the Police.” MGM allowed this employee to interview and provide this information to NBC News exclusively. While they may say “we cannot comment on an ongoing investigation” they are also working on their PR campaign in other ways, like this.
I want to hear the rest of the recorded information that NBC has now, it should reveal if Mandalay employees actually did call the cops a full 5 min. before the shooter started killing people in the crowd.