SIOUX FALLS, S.D. (KELO)-- A Former Rapid City gymnastics coach is headed to prison for child pornography. On August 24, a federal judge sentenced 26-year-old Hayden Sengua to more than 10-years behind bars. When authorities arrested him last year, Sengua had around 15,000 illegal pictures and video s of children, including infants and toddlers. ...read more read less