2017 Route 91 Harvest Festival mass shooting from Mandalay Bay

On October 1, 2017, a gunman fired into a crowd at the Route 91 Harvest country music festival from a suite on an upper floor of the Mandalay Bay Resort and Casino, causing 60 deaths and injuring hundreds in the deadliest mass shooting in modern U.S. history. The shooter fired from a vantage point within the Mandalay Bay property on the Las Vegas Strip; the incident prompted investigations into security, emergency response, and gun access. The event has had lasting impacts on event security practices and public memory in Las Vegas.