Police stand at the scene of a shooting along the Las Vegas Strip, Monday, Oct. 2, 2017, in Las Vegas. Multiple victims were being transported to hospitals after a shooting late Sunday at a music festival on the Las Vegas Strip. (AP/John Locher)
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Shooter Kills 50, Injures 200 At Las Vegas Concert

The shooting at the sold-out Route 91 Harvest festival was the deadliest mass shooting in modern U.S. history.