We are staying in the back side of the Club Tower at the Tropicana, 10th floor, which faces the venue. We'd heard the music blaring for two nights, as it was quite loud. Wasn't sure what the popping as but it sounded like machine gun fire. The music died off about 30 seconds into the gunfire and heard a lot of yelling and screaming, and saw people running out of the venue. For the next hour and a half, constant sirens. At one point there were several ambulances stacked up, and I counted another fifteen show up within a three minute stretch.
LVPD had said they figured it was a lone shooter, but they still had two helicopters and several squad cars with searchlights going around the nearby streets for over an hour. I-15 was closed. Squad cars as far as I could see down South Las Vegas Blvd (down to Russell St., where the famous "Welcome" sign is located), and moving or parked at every other road around here. The airport was temporarily closed for maybe three hours (we face the airport). All hotels and is were on lockdown. Still might be, as I haven't been to the lobby yet. Some roads are still closed off around the Trop.
We had just gotten back to the room about 10 minutes before it happened, having just come from New York, New York across the street. Good thing my better half way tired from all of the walking or we would have gotten caught in the mayhem. I still think it sounded like there were two shooters, but now I wonder if I was heading some sort of echo from other buildings. I thought maybe the noise was a sound effect the band was using (perhaps some sort of war/veteran song). But the commotion soon after proved that wrong.
We're ready to bail. We'd wanted to stay a little longer after checkout today but I don't even want to be here now.