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, a longtime Broward sheriff's deputy assigned to school, retired shortly after the shooting after security video showed he drew his gun but did not enter the three-story freshman building where the killings took place, instead taking cover nearby and not moving for about 50 minutes. (Broward County Public Schools via AP, File)
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