. welcome back to our viewers in the united states and around the world. the breaking news, a s.w.a.t. team about to enter one of the homes of the gunman behind what is the deadliest shooting in modern american history. we're learning disturbing new details about the 64-year-old shooter. the county sheriff revealing in addition to 16 guns in his hotel room, they are saying there were 18 additional firearms at his home, the home they believe he came from to the mandalay bay, as well as several thousands rounds of ammunition. they also found ammonium nitrate in his car which was also used to carry out the oklahoma city bombing. kyung lah is in mesquite near the shooter's home. we are learning moment by moment here, so much more. >> what's becoming very clear,