WASHINGTON (AP) – The student’s attack began with a shotgun blast through the windows of a California high school. Rich Agundez, the El Cajon policeman assigned to the school, felt his mind shift into overdrive.

People yelled at him amid the chaos but he didn’t hear. He experienced “a tunnel vision of concentration.”

While two teachers and three students were injured when the glass shattered in the 2001 attack on Granite Hills High School, Agundez confronted the assailant and wounded him before he could get inside the school and use his second weapon, a handgun.