Background information Edit
The role of Admiral Fitzpatrick was played by well-known announcer Ed Reimers, familiar in the 1960s for his trademark spokesman line, "You're in good hands with Allstate (Insurance)." A well-known outtake from the episode features a gag where at the end of the communication, Reimers catches a tribble thrown to him from offscreen, and says "You're in good hands with tribbles."
Fitzpatrick was the only admiral in The Original Series to have rank insignia visible, it was a wide gold band (as worn by commodores), with a single solid rank stripe above and beneath it. Although simply called an "admiral", since a similar uniform style, in Star Trek: The Motion Picture, used a commodore insignia with one stripe above it to signify a rear admiral, Fitzpatick would thus seem to be a vice admiral.