Byron Morrow was a character actor who played two Starfleet admirals in The Original Series: Komack in Amok Time and Westervliet in For the World Is Hollow and I Have Touched the Sky.
Byron Morrow (1911–2006) specialised in figures of authority, and both of his Star Trek roles were flag officers seen on the bridge viewscreen.
In Amok Time he is Admiral Komack of Starfleet Command, who refuses Kirk's request to divert to Vulcan and orders the Enterprise on to the inauguration ceremony at Altair VI, an order Kirk disobeys to save Spock's life. T'Pau's later intervention spares Kirk the consequences.
In the third-season episode For the World Is Hollow and I Have Touched the Sky he plays Admiral Westervliet, who instructs Kirk to leave the problem of the asteroid ship Yonada to Starfleet and resume his mission.