With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He played
Special Agent Ron Butterfield, the head of
President Josiah Bartlet's
Secret Service detail, on
The West Wing, and CTU Administrative Director
Richard Walsh in the first two episodes of
24. He played Sgt. Maj. Ron Cheals in CBS' action drama series
The Unit. He starred in the season 6
two-part finale of ''
Grey's Anatomy'' as Gary Clark, the broken widower who perpetrates a hospital shooting while pursuing the doctors responsible for unplugging his wife's
life support. He portrayed Nick Ford on the second season of
Bates Motel, and Alan Sparks on
Extant. He had a recurring role as Senator Roland Foulkes on
Rectify. His most notable film performances occur in
Seabiscuit,
Secondhand Lions,
Transformers,
Dancer, Texas Pop. 81,
Traffic,
Sea of Love,
A Quiet Little Marriage,
Nothing but the Truth,
Green Zone,
J. Edgar and
Dallas Buyers Club. ==Personal life==