Acting William Francis McGuire Biography William Francis McGuire is an actor. Acting Mission: Impossible III IMF Head of Security 2006 Detonator Sports Announcer 2003 Tru Confessions Bob 2002 Nailed Priest 2001 The Joyriders Man in Movie Line 1999 Sins of the Mind Dr. Slater 1997 Shimmer Father 1993 Agent-readable