Former pro football player Tony Dorsett has been cast in an action-adventure film set during the Vietnam War, his press agent says.

The 37-year-old former running back will star with David Carradine in "Kill Zone," Milton Kahn said."They wanted a superstar's name," Kahn said from Santa Barbara, Calif. "Tony's interested in show business. Why not Tony?"

Dorsett will play a Marine on a secret mission to destroy an enemy dump. Filming in the Philippines starts this month under director Cirio Santiago.

Dorsett won the Heisman Trophy in 1976 and later played for the Dallas Cowboys and Denver Broncos. A knee injury forced his retirement in 1989.