John Mahon

Acting

• 
  The Exorcist1973Language Lab Director
• 
  The People Under the Stairs1991Police Sergeant
• 
  One False Move1992Chief Jenkins
• 
  Roswell1994Red Hat Vet
• 
  The American President1995Chairman of the Joint Chiefs
• 
  L.A. Confidential1997Police Chief
• 
  Armageddon1998Karl
• 
  Austin Powers: The Spy Who Shagged Me1999NATO Colonel
• 
  Zodiac2007Riverside Captain