FILE - In this Oct. 1, 2017, file photo, police run for cover at the scene of a shooting near the Mandalay Bay resort and casino on the Las Vegas Strip in Las Vegas. In a report released Tuesday, Jan. 29, 2019, the FBI concluded its investigation into the deadliest mass shooting in modern U.S. history without determining a motive. After nearly 16 months, the agency says it can't determine why gunman Stephen Paddock killed 58 people and injured nearly 900 others in October 2017. (AP Photo/John Locher, File)
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