Isaiah Green witnessed it.
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At the time, he was a Pleasantville High School senior up in the bleachers.
A year later, he has released a book about the terrifying experience, titled "Through My Eyes."
The book is dedicated to 10-year-old Micah Tennant who was shot and killed in the stands.
"I was just like him going to games, wanting to be like the football players, and that's just really sad for someone to take his life away," Green said.
Raw video: At least 2 injured in shooting at high school football game in Pleasantville, New Jersey
Pleasantville was playing Camden High School in a championship game when the shots rang out.
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"I heard seven to eight gunshots. I just hear chaos erupt and see it, too. People were running, people were crying, screaming, jumping over things," Green described.
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Green was in the stands that night with his grandfather. He feared for his own life.
"I was really scared. At the time I thought I was going to die, for a moment, and that was very scary to think about," Green said.
Though he never knew Micah Tennant personally, Green is working hard to keep the boy's memory alive.
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"I'm going to continue to push this book until everybody knows his name and everybody uses this not as an event they remember as a tragic moment, but as a moment we've learned from and get better and heal as a society," Green reflected.
Green is now a freshman at Rowan County Gloucester County. He's majoring in criminal justice.
He hopes his book "Through My Eyes" sparks changes against gun violence.
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Atlantic City park named in honor of boy killed during football game shooting