Why Did it Take So Long to Stop the Las Vegas Gunman?

At LAT, "New disclosure shows a casino guard alerted hotel to gunman before Vegas massacre began. So why did it take so long to stop him?"

Before Vegas massacre, a hotel security guard called hotel officials to warn them about a gunman on the 32nd floor https://t.co/zp0tSpO8le

— Los Angeles Times (@latimes) October 11, 2017