Las Vegas gunman stockpiled firearms but didn't set off red flags
For up to 11 minutes, Stephen Paddock shot concertgoers in Las Vegas Sunday night with seemingly endless bursts of gunfire - more than a dozen volleys in all. Paddock bought nearly 50 guns legally, but none of the purchases set off any red flags for the Bureau of Alcohol, Tobacco and Firearms. Norah O'Donnell reports.