On the evening of Sunday, October 1, 2017, thousands of country music fans had gathered for the final night of the Route 91 Harvest country music festival in a festival grounds across the street from Mandalay Bay hotel-casino.
Just after 10 p.m. that night, shots started ringing out.
A man, identified by Metro Police as 64-year-old Stephen Paddock, opened fire on the crowd 400 feet below.
By the time the shooting was done - 11 minutes later - 58 people would be dead and more than 500 hurt in the worst mass shooting in modern American history.