FILE - In this Feb. 18, 2015, file frame from video from Broward County Public Schools, school resource officer Scot Peterson talks during a school board meeting of Broward County, Fla. Peterson, the then-Florida sheriff's deputy assigned to protect the high school where 17 died in last year's shooting has filed a report in rebuttal to a commission's finding that he was "derelict in his duty." The South Florida Sun Sentinel reports former Broward County Deputy Scot Peterson said in a 14-page rebuttal to the Marjory Stoneman Douglas Public Safety Commission that he secured the three-story building where the shooting happened as he was trained. (Broward County Public Schools via AP, File)
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