Gunman Stephen Paddock fired more than 1,100 rounds the night of the Las Vegas shooting. The total includes about 200 rounds fired from Paddock’s Mandalay Bay corner suite and into the hallway of the 32nd floor. The mass shooting left 58 concertgoers dead and more than 500 injured. Lombardo said they found about 4,000 more rounds of unused ammunition in the gunman’s suite. Investigators have not determined why Paddock stopped shooting.