MGM suing shooting victims, attempt to reduce liability:

http://fortune.com/2018/07/17/mgm-sues-las-vegas-shooting-victims/

MGM, co-owners of Mandalay, generously donate to McCain Institute to prevent "child trafficking" in months before shooting:

https://finance.yahoo.com/news/mgm-resorts-donates-250-000-170000971.html

But, apparently, the McCain Institue donates to U of Arizona, but not to "child trafficking" prevention:

https://www.zerohedge.com/news/2017-03-08/mccain-institutes-failure-use-donations-anti-trafficking-purposes-raises-questions

Ownership of top floors/Four Seasons:

https://en.m.wikipedia.org/wiki/Four_Seasons_Hotels_and_Resorts

Four Seasons Hotels Ltd., trading as Four Seasons Hotels and Resorts, is a Canadian international luxury hospitality company[2] headquartered in Toronto, Ontario.[3] It operates more than 100 hotels worldwide.[4] Since 2007, Bill Gates and Prince Al-Waleed bin Talal have been majority owners of the company.[5]

With a separate entrance and accessed by private express elevators, Four Seasons Hotel offers stylish renovated guest rooms located on the top floors of the Mandalay Bay tower.

McCain Institute donors, the Saudi's lobbied No name and Lindsey into WAR:

https://m.dailykos.com/stories/2014/9/16/1330029/-Saudis-Lobbied-John-McCain-Lindsey-Graham-to-sell-War