The man accused of holding five girls at gunpoint at Chelsea Middle School last year is found not guilty by reason of mental disease or defect. But that doesn't mean Ryan Sims is going free.  A Shelby County judge is committing Sims to a state mental hospital.  Both sides agreed to the move, after experts determined Sims is a paranoid schizophrenic.  Shelby County D.A. Robby Owens says he doesn't think Sims will ever be freed.