William Windom, who played Commodore Matt Decker on the ‘Star Trek: The Original Series’ episode “The Doomsday Machine”, died on Thursday, August 16th at his home in Woodacre, California. According to his widow, Patricia, congestive heart failure was the cause of death. Windom was 88-years old.

Watch Windom as Commodore Decker in the clip below.