(written from a Production point of view)
David Thomas "Dave" Armstrong (16 October 1924 – 13 May 2016; age 91) was the actor who played Kartan in the Star Trek: The Original Series episode "Operation -- Annihilate!". He filmed his scene on Wednesday 15 February 1967 at the TRW Space and Defense Park in Redondo Beach, California.
Armstrong made an uncredited appearance in the 1954 film A Star Is Born, as guest star Richard Webb. He also appeared as a reporter in the 1977 film, New York, New York. That film also featured Star Trek: The Next Generation/Star Trek: Deep Space Nine guest actor Dick Miller. His television appearances include guest spots on Mission: Impossible, The Invaders, The Twilight Zone, and The Man from U.N.C.L.E..