Chilling footage shows Ethan Crumbley practicing at shooting range dailymail.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailymail.co.uk Daily Mail and Mail on Sunday newspapers.
More witnesses will take the stand Monday as James Crumbley's trial continues. On Friday, five witnesses testified, including the woman who sold Crumbley the gun his son used in the Oxford High School shooting, and an assistant principal who heard gunfire and encountered the shooter.