Police Audio: 'Active shooter at Mandalay Bay... Many people down'

The Mandalay Bay pictured in this file photo. The shooter aimed at the crowd of 22,000 from a hotel room on the 32nd floor.

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The Mandalay Bay pictured in this file photo. The shooter aimed at the crowd of 22,000 from a hotel room on the 32nd floor.

Radio communications from the Las Vegas Police Department as the mass shooting unfolded Sunday night captures the frantic moments faced by law enforcement officers as they determined where the shooting was coming from and stormed the gunman's room, #135 on the 32nd floor of the Mandalay Bay Hotel. (Oct. 2)

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