Dude fired full auto into a concert from the 32nd floor of Mandalay bay. Sounded like he had high capacity drum magazines or a belt fed gun. Crazy long bursts with no reloading. It took a while for people to realize they were being shot at.
About 40,000 fans were in the fairgrounds area, where there were multiple stages and other areas set up for the festival, according to The Associated Press. Concertgoer Kodiak Yazzi, 36, told the AP that the music stopped temporarily after a sound that was like a firecracker. It then started up again before another round of pops sent performers ducking for cover and fleeing the stage, while panicked fans also rushed for the exits. Yazzi told the AP he took cover and saw flashes of light coming from the Mandalay Bay hotel tower above the concert. He said the bursts would start and stop for about five minutes.