In Pictures: The Deadliest Mass Shooting In US History, At A Las Vegas Country Music Festival

LAS VEGAS, NV - OCTOBER 01: People run from the Route 91 Harvest country music festival after apparent gun fire was hear on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A body is covered with a sheet in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. October 1, 2017. REUTERS/Las Vegas Sun/Steve Marcus TPX IMAGES OF THE DAY

Las Vegas Metro Police officers confer near a staging area in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. early October 2, 2017. REUTERS/Las Vegas Sun/Steve Marcus

Metro Police officers speak with a man near the concert site on October 2, 2017, after a mass shooting during a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. REUTERS/Las Vegas Sun/Steve Marcus

Las Vegas Metro Police officer stands by at a staging area in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. early October 2, 2017. REUTERS/Las Vegas Sun/Steve Marcus

FBI agents confer in front of the Tropicana hotel-casino on October 2, 2017, after a mass shooting during a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. REUTERS/Las Vegas Sun/Steve Marcus

FBI agents ride an armored vehicle to a staging area on October 2, 2017, after a mass shooting during a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S. REUTERS/Las Vegas Sun/Steve Marcus

LAS VEGAS, NV - OCTOBER 02: People wait to get on a McCarran International Airport rental car bus outside the Thomas & Mack Center after a mass shooting at a country music festival on October 2, 2017 in Las Vegas, Nevada. People who could not go to hotel-casinos that were closed after the shooting are temporarily staying at the center. The gunman, identified as Stephen Paddock, 64, of Mesquite, Nevada, opened fire from the Mandalay Bay Resort and Casino on the music festival, leaving at least 50 people dead and hundreds injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 01: People scramble for shelter at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 01: A Las Vegas Metropolitan Police Department detective talks to a woman in the intersection of Las Vegas Boulevard and Tropicana Ave. after a mass shooting at a country music festival nearby on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 50 people dead and more than 200 injured. Police have confirmed that one suspect, Stephen Paddock, has been shot and killed. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 01: A person makes a call on his phone as people run from the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)2

LAS VEGAS, NV - OCTOBER 01: People tend to the wounded outside the Route 91 Harvest Country music festival grounds after an apparent shooting on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 01: 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 October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 2 people dead. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 01: People take cover at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 01: (EDITORS NOTE: Image contains graphic content.) A person lies on the ground at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 02: 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. People who could not go to hotel-casinos that were closed after the shooting are temporarily staying at the center and residents are donating supplies. The gunman, identified as Stephen Paddock, 64, of Mesquite, Nevada, opened fire from the Mandalay Bay Resort and Casino on the music festival, leaving at least 50 people dead and hundreds injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 02: An injured person is tended to in the intersection of Tropicana Ave. and Las Vegas Boulevard after a mass shooting at a country music festival nearby on October 2, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, killing over 20 people. Police have confirmed that one suspect has been shot dead. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 01: A body lies under a sheet as fire and rescue personnel gather at the intersection of Las Vegas Boulevard and Tropicana Ave. after a mass shooting at a country music festival nearby on October 1, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, leaving at least 20 people dead and more than 100 injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 01: (EDITORS NOTE: Image contains graphic content.) People carry a peson at the Route 91 Harvest country music festival after apparent gun fire was heard on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 02: 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. The gunman, identified as Stephen Paddock, 64, of Mesquite, Nevada, opened fire from the Mandalay Bay Resort and Casino on the music festival, leaving at least 50 people dead and hundreds injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 02: Las Vegas Metropolitan Police officers run down Tropicana Ave. near Las Vegas Boulevard after a mass shooting at a country music festival nearby on October 2, 2017 in Las Vegas, Nevada. A gunman has opened fire on a music festival in Las Vegas, killing over 20 people. Police have confirmed that one suspect has been shot dead. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 02: Police officers stop a man who drove down Tropicana Ave. near Las Vegas Boulevard and Tropicana Ave, which had been closed after a mass shooting at a country music festival that left at least 2 people dead nearby on October 2, 2017 in Las Vegas, Nevada. The man was released. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 02: 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. A gunman, identified as Stephen Paddock, 64, of Mesquite, Nevada, opened fire from the Mandalay Bay Resort and Casino on the music festival, leaving at least 50 people dead and hundreds injured. Police have confirmed that one suspect has been shot. The investigation is ongoing. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NV - OCTOBER 01: People tend to the wounded outside the festival ground after an apparent shooting on October 1, 2017 in Las Vegas, Nevada. There are reports of an active shooter around the Mandalay Bay Resort and Casino. (Photo by David Becker/Getty Images)