SAGINAW TOWNSHIP, Mich. - Snow crunching under their feet, breaths coming quickly, the officers grabbed their duty rifles and ran toward Nouvel Catholic Central High School.
The code had gone out just two minutes earlier on Feb. 7: active shooting in progress.
They didn't hesitate. When they found that the double doors next to the parking lot were locked, one officer rammed them with his cruiser and smashed them open. Another stepped over the shattered glass and into a hallway lined with lockers. "Move, let's move, let's move!" he yelled, in moments captured on body camera.
Lt. James Rich was one of the officers at the scene. He remembers the rush of adrenaline and the strange silence inside the school. It felt like a puzzle whose pieces didn't fit.
Officers checked every room in the building. They found nothing except terrified children and teachers.
The 911 call that led police there had been a hoax.
It got stranger. At least eight other schools across Michigan were targeted with similar hoax calls that morning.
For weeks, Rich would wake up in the middle of the night, replaying the incident in his mind. His colleague had a term for what happened: terror without a body count.