Staff Sgt. Robert Bales is scheduled to enter guilty pleas to charges of premeditated murder Wednesday at Joint Base Lewis-McChord, south of Seattle, said attorney John Henry Browne. A sentencing-phase trial set for September will determine whether he is sentenced to life in prison with or without the possibility of parole. The judge and the commanding general at Joint Base Lewis-McChord, where Bales is being held, have approval over the deal.