Michael O'Neill
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Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing. He played CTU Administrative Director Richard Walsh in the first two episodes of 24. He played Sgt. Maj. Ron Cheals in the CBS action-
Born
May 29, 1947
Montgomery, Alabama, USA
Known For
Acting
Movies
42 acting
2 crew
Popularity
1.5
Known For
War of the Worlds
2025
as Secretary of Defense Walter Crystal
Air
2023
as Joe Dean
Transformers
2007
as Tom Banacheck
Dallas Buyers Club
2013
as Richard Barkley
Traffic
2000
as Lawyer Rodman
Green Zone
2010
as Colonel Bethel
Bride Hard
2025
as Frank
Sea of Love
1989
as Raymond Brown
Dreamcatcher
2003
as Gen. Matheson
Secondhand Lions
2003
as Ralph
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