Komack was responsible for overseeing the USS Enterprise's mission to Omicron Ceti III on stardate 3417. After he learned of the survival of the colonists, he ordered them evacuated to Starbase 27. (TOS: "This Side of Paradise")
On stardate 3372, Admiral Komack denied the request of the Enterprise to divert to Vulcan but to maintain course for Altair VI. Komack later allowed Enterprise to divert following a request made by Vulcan matriarch T'Pau. (TOS: "Amok Time")
Admiral Komack, who was first mentioned as a dialogue reference in "The Alternative Factor", was played by Byron Morrow in "Amok Time". In that episode's revised final draft script, the character is described: "[He] runs along the square-built lines of an English bulldog. He is a competent man, quick of speech and thought, but he is not going to like having a starship captain question his orders."
According to the text commentary for "Amok Time", by Michael and Denise Okuda, Komack was named for James Komack, director of TOS: "A Piece of the Action". That homage was later picked up in the eleventh film, when a name placard at Starfleet Academy read "James Komack".
Byron Morrow later portrayed Admiral Westervliet in "For the World is Hollow and I Have Touched the Sky". Although Westervliet's name was not spoken on screen, but rather appeared in the end credits, a noticeable change was made in Morrow's appearance to differentiate between the two characters. Admiral Komack was almost entirely referred to as Westervliet in the script for "Amok Time", which establishes Komack as a separate character.