Jami Johnson Jr., who pleaded guilty to second-degree murder for his role in a shooting that killed two Lower Brule youths, Tayshawn Battese and Teron Sazue, was sentenced Wednesday to 17 years in federal prison. Johnson pleaded guilty to one count of second-degree murder and aiding and abetting. Two other men, Kingston Bagola and Timothy Janis, were also allegedly involved in the shooting. Bagola has been indicted separately, while Janis died b…