Garret Lee Dillahunt is an American actor. He is best known for his work in television for the roles of Simon Escher on Burn Notice, Burt Chance on the Fox sitcom Raising Hope, Ty Walker in the sixth season of Justified, a terminator in Terminator: The Sarah Connor Chronicles, Matthew Ross in The 4400, Jack McCall, Francis Wolcott in Deadwood, and Steve Curtis in ER, and John Dorie in Fear the Walking Dead.