Crime scene tape surrounds the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017. (Photo by MARK RALSTON/AFP/Getty Images)
US-CRIME-SHOOTING
A heavily armed policeman leaves the area around the Mandalay Hotel after a gunman killed more than 58 people and wounded more than 500 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017.
(Photo by MARK RALSTON/AFP/Getty Images)
US-CRIME-SHOOTING
Two festivalgoers leave the area around the Mandalay Hotel after a gunman killed more than 50 people and wounded more than 500 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017. (Photo by MARK RALSTON/AFP/Getty Images)
Shooting At Mandalay Bay In Las Vegas
A funeral home van departs the Las Vegas Village concert grounds after a lone gunman opened fired on the Route 91 Harvest country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)
US-CRIME-SHOOTING
Police return to their vehicles after patrolling around the Mandalay Hotel when a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017.
(Photo by MARK RALSTON/AFP/Getty Images)
US-CRIME-SHOOTING
Three festivalgoers ask for directions as they leave the area around the Mandalay Hotel after a gunman killed more than 50 people and wounded more than 500 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017. (Photo by MARK RALSTON/AFP/Getty Images)
Mass Shooting At Mandalay Bay In Las Vegas
Broken windows are seen on the 32nd floor of the Mandalay Bay Resort and Casino after a lone gunman opened fired on the Route 91 Harvest country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by David Becker/Getty Images)
Mass Shooting At Mandalay Bay In Las Vegas
People hug and cry outside the Thomas & Mack Center after a mass shooting at the Route 91 Harvest country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
US-CRIME-SHOOTING
Police form a perimeter around the road leading to the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 400 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017. (Photo by MARK RALSTON/AFP/Getty Images)
Mass Shooting At Mandalay Bay In Las Vegas
A Las Vegas Metropolitan Police Department officer helps deliver blankets and food to people at the Thomas & Mack Center after a mass shooting at a country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Mass Shooting At Mandalay Bay In Las Vegas
A Las Vegas Metropolitan Police Department officer helps deliver bottled water to people at the Thomas & Mack Center after a mass shooting at a country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Reported Shooting At Mandalay Bay In Las Vegas
People head to buses as they leave the Thomas & Mack Center after a mass shooting at a country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Mass Shooting At Mandalay Bay In Las Vegas
Concert-goers wait for a ride outside the Thomas & Mack Center after a mass shooting at a country music festival on October 2, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)
Las Vegas concert shooting
An ambulance leaves the intersection of Las Vegas Boulevard and Tropicana Ave. after a mass shooting at a country music festival nearby on Oct. 2, 2017 in Las Vegas. A gunman opened fire on a music festival, leaving at least 20 people dead and more than 100 injured. (Photo by Ethan Miller/Getty Images)
La Vegas concert shooting
A banner hangs on the fence at the Route 91 Harvest country music festival grounds after a active shooter was reported on Oct. 2, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
A Las Vegas Metropolitan Police officer stands in the intersection of Las Vegas Boulevard and Tropicana Ave. after a mass shooting at a country music festival nearby on Oct. 2, 2017 in Las Vegas. (Photo by Ethan Miller/Getty Images)
Las Vegas concert shooting
People scramble for shelter at the Route 91 Harvest country music festival after apparent gun fire was heard on Oct. 1, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
People run from the Route 91 Harvest country music festival after apparent gun fire was heard on Oct. 1, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
Police officers point their weapons at a car driving down closed Tropicana Ave. near Las Vegas Boulevard after a reported mass shooting at a country music festival nearby on Oct. 2, 2017 in Las Vegas. (Photo by Ethan Miller/Getty Images)
Las Vegas concert shooting
A man lays on top of a woman as others flee the Route 91 Harvest country music festival grounds after a active shooter was reported on Oct. 1, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
Las Vegas police stand guard along the streets outside the the Route 91 Harvest country music festival grounds after a active shooter was reported on Oct. 1, 2017. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
People run for cover at the Route 91 Harvest country music festival after apparent gun fire was heard on Oct. 1, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
Las Vegas concert shooting
People carry a person at the Route 91 Harvest country music festival after apparent gun fire was heard on Oct. 1, 2017 in Las Vegas. (Photo by David Becker/Getty Images)
