Jonathan Smith was shot at least twice while trying to run back and save others in the crowd at the Route 91 Harvest festival in Las Vegas. He had driven to Las Vegas from Orange County, Calif., on Thursday to celebrate the 43rd birthday of his brother, Louis Rust, a big country music fan who had attended the festival in the past. They spent the weekend enjoying the music and had scored seats close to the stage for Jason Aldean’s prime-time performance Sunday night.