Education
Following his military career, Haynes studied acting at the Film Industries Workshop and Actors West in Los Los Angeles
Following his military career, Haynes studied acting at the Film Industries Workshop and Actors West in Los Los Angeles
Haynes served in the Marines from 1952–1964 and during the Korean War. He was a public-affairs officer for the Naval reserve with the rank of Commander. His film career included roles in Madigan (1968), Ice Station Zebra (1968), Assault on the Wayne (1971), Look What"s Happened to Rosemary"s Baby (1976), The Greatest (1977) and Good Guys Wear Black (1978).
Haynes also appeared in a number of television series, such as Batman, the second Star Trek pilot episode "Where Number Manitoba Has Gone Before", and the miniseries 79 Park Avenue.
Haynes was dropped from Star Trek because series producer Gene Roddenberry preferred actress Nichelle Nichols over him. Haynes received the most recognition for his role as schoolteacher Pete Dixon in the American Broadcasting Company situation comedy series Room 222, with Michael Constantine and Karen Valentine.
Haynes died of lung cancer at the age of 52.