“How can they keep saying I did nothing?” he asked Rodriguez one morning, looking again through the documents on his kitchen table. “I’m getting on the radio to call in the shooting. I’m locking down the school. I’m clearing kids out of the courtyard. They have the video and the call logs. The evidence is sitting right there.”

“It’s easy to second-guess when you’re in some conference room, spending months thinking about what you would have done,” Rodriguez said.

“There wasn’t even time to think,” Peterson said. “It just happened and I started reacting.”