New revelations: Las Vegas gunman shot security guard before opening fire on concert-goers

The gunman who attacked a country-music concert in Las Vegas shot a security guard in the hotel before beginning his assault on the concertgoers, Clark County Sheriff Joe Lombardo said Monday, a significant change to the timeline of the massacre that officials had previously given to the public. Officials had previously said that gunman Stephen Paddock, 64, of Mesquite, Nev., shot Mandalay Bay security guard Jesus Campos after Paddock had started shooting at the Route 91 Harvest country-music festival from his 32nd-floor hotel suite on Oct. 1.-- More...