Chilling new clues suggest the man behind the deadliest mass shooting in modern US history planned to inflict even more carnage. Stephen Paddock didn’t just have 23 weapons in his Mandalay Bay hotel suite, which he turned into a sniper’s nest to kill 58 Las Vegas concertgoers. He also had more than 50 pounds of explosives and 1,600 rounds of ammunition in his car in the hotel parking lot. Investigators now believe Paddock intended to survive the massacre.