The Kewaunee County Sheriff's Department thanks you for your help locating a Casco teenager Tuesday. Fifteen-year-old Adrien J. Hockenstock was reported missing after leaving his Casco home on his bike on July 4th at 2:30 p.m. He was located at a nearby residence about an hour after the Kewaunee County Sheriff's Department issued the runaway juvenile alert early Tuesday afternoon.