File - In this July 20, 2012 file photo, Tom Sullivan, center, embraces family members after losing his son Alex in the Aurora movie theater shooting, in Aurora, Colo. As the start the trial of the shooting spree defendant James Holmes approached, Sullivan told The Associated Press that, (before the shooting), “I didn’t know it was anything that I needed to worry about. But I was wrong,’’ he said. “Someone else’s son having a mental problem, having easy access to weapons, all of a sudden became my problem.’’ (AP Photo/Barry Gutierrez, file)
File - In this July 20, 2012 file photo, Tom Sullivan, center, embraces family members after losing his son Alex in the Aurora movie theater shooting, in Aurora, Colo. As the start the trial of the shooting spree defendant James Holmes approached, Sullivan told The Associated Press that, (before the shooting), “I didn’t know it was anything that I needed to worry about. But I was wrong,’’ he said. “Someone else’s son having a mental problem, having easy access to weapons, all of a sudden became my problem.’’ (AP Photo/Barry Gutierrez, file) Barry Gutierrez AP
File - In this July 20, 2012 file photo, Tom Sullivan, center, embraces family members after losing his son Alex in the Aurora movie theater shooting, in Aurora, Colo. As the start the trial of the shooting spree defendant James Holmes approached, Sullivan told The Associated Press that, (before the shooting), “I didn’t know it was anything that I needed to worry about. But I was wrong,’’ he said. “Someone else’s son having a mental problem, having easy access to weapons, all of a sudden became my problem.’’ (AP Photo/Barry Gutierrez, file) Barry Gutierrez AP