A youth has been found guilty of shooting a German tourist in the head on a highway west of Calgary last year. A judge convicted the boy from the Stoney Nakoda First Nation, who cannot be identified because he was 16 at the time, of aggravated assault and recklessly discharging a firearm. Court heard that Horst Stewin was driving a black SUV on the First Nation's land with his family when someone in a passing car shot him. His vehicle veered off the highway and crashed into some trees.