A reference guide released by the FBI National Center for the Analysis of Violent Crime (NCAVC) Behavioral Analysis Unit in March 2018 listing potential warning signs and concerning behaviors that may be exhibited by perpetrators of school shootings.
On October 1, 2017, over 22,000 people gathered for a music festival at a 15-acre, open-air concert venue in Las Vegas, Nevada. On the final night of the festival, Stephen Craig Paddock opened fire into the crowd from the 32nd floor of the Mandalay Bay Resort and Casino. The gunfire started around 10:05 p.m. and continued for approximately eleven minutes, with Paddock firing over 1,000 rounds. Fifty-eight persons were killed and several hundred more were injured. As responding law enforcement officers assembled in the hallway outside of his hotel room, Paddock committed suicide.