SHEBOYGAN, Wis. (WHBL) - Staff and students in the Sheboygan Falls School District are in mourning today after losing one of their own.  Sixteen year old Jordan Wimmler of Waldo was killed Tuesday night when he lost control of his pickup truck on Highview Road in the town of Lyndon.  The Sheriff’s Department said it happened shortly after 5pm.  Authorities said Wimmler lost control due to gravel and driver inexperience. The truck left the road and slammed into a tree.  Wimmler, who was wearing his seatbelt, was dead at the scene but his 14 year old brother - a passenger in the vehicle - wasn’t injured.