Mack was charged with intentionally and knowingly shooting Mr. Kolar and with armed robbery stemming from the same course of events. In waiving his right to have a jury determine the factual basis for these elements of the charges, Mack effectively waived his right to have a jury determine the factual basis that would support a natural life sentence under Illinois law. See, e.g., People v. Brooks, 765 N.E.2d 1160, 1162-63 (Ill.App.Ct. 2002). The trial judge determined beyond a reasonable doubt that Mack shot Mr. Kolar intentionally and knowingly in the course of an armed robbery, and the Supreme Court of Illinois upheld those findings.