Dakota County prosecutors say there’s insufficient evidence to file charges after two Lakeville South High School students were killed and another seriously injured in a crash while playing “nerf wars.” Authorities say the 17-year-old driver of the truck wasn’t speeding and they can’t deterine whether he was using a cell phone at the time of the crash. Dakota County Attorney James Backstrom says while no criminal charges are being brought, he hopes all youth take notice of how quickly tragedy can occur in a motor vehicle. Backstrom says games such as “Nerf Wars” have no place in a moving vehicle.