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LAS VEGAS, NV - OCTOBER 04: Bry Thompson, 21, of Las Vegas wipes his eyes at a makeshift memorial set up across from the Las Vegas Village on October 4, 2017 in Las Vegas, Nevada. Thompson had friends attending the Route 91 Harvest country music festival when a lone gunman opened fire on the crowd killing at least 59 people and injuring more than 500. The massacre is one of the deadliest mass shooting events in U.S. history. Thompson's friends were unhurt. (Photo by David Becker/Getty Images)

LAS VEGAS, NV - OCTOBER 04:  Bry Thompson, 21, of Las Vegas wipes his eyes at a makeshift memorial set up across from the Las Vegas Village on October 4, 2017 in Las Vegas, Nevada. Thompson had friends attending the Route 91 Harvest country music festival when a lone gunman opened fire on the crowd killing at least 59 people and injuring more than 500. The massacre is one of the deadliest mass shooting events in U.S. history. Thompson's friends were unhurt.  (Photo by David Becker/Getty Images)