LAS VEGAS, NV - OCTOBER 3: Matthew Helms, who worked as a medic the night of the shooting, visits a makeshift memorial for the victims of Sunday night's mass shooting, on the north end of the Las Vegas Strip, October 3, 2017 in Las Vegas, Nevada. The gunman, identified as Stephen Paddock, 64, of Mesquite, Nevada, allegedly opened fire from a room on the 32nd floor of the Mandalay Bay Resort and Casino on the music festival, leaving at least 58 people dead and over 500 injured. According to reports, Paddock killed himself at the scene. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Drew Angerer/Getty Images)