The author of this article is convicted felon Hal Turner - https://en.wikipedia.org/wiki/Hal_Turner. He is NOT a reputable source.
See comments at bottom of this one:
http://www.mynews4.com/news/story/Officials-provide-new-details-on-deadly-Las-Vegas/5yb9InSxoEC4Nwe6MaJ6hA.cspx