Lieutenant Pitcairn was a male Human Starfleet officer who lived during the mid-23rd century. He served in the operations division aboard the USS Enterprise under Captain James T. Kirk, during Kirk's historic five-year mission. In 2267, Pitcairn served as the ship's security chief.
That same year, Pitcairn accompanied Vinci to the bridge, in response to Spock's request for security to send up an armed team. Upon his arrival to the bridge, he was informed by Doctor Leonard McCoy that Spock to be put under arrest for mutiny and confined to his quarters.
Pitcairn and another security guard later stood watch in the ship's hearing room during Spock's preliminary hearing. After the hearing had concluded, and Spock refused to return control of the Enterprise to Kirk, the captain ordered Pitcairn and his subordinate to lock Spock up, and they escorted him from the hearing room. (TOS: "The Menagerie, Part I")
Background information Edit
Pitcairn was played by actor Brett Dunham, who was uncredited for the role.
While the name "Pitcairn" itself was never spoken on screen, the name is evident in "The Menagerie" script, where it was applied to the "Security Chief". Despite this apparent evidence, several reference guides (including the Star Trek Concordance, Star Trek Compendium, and Star Trek Encyclopedia) all associate the name Pitcairn with the role identified as the "Transporter Chief", who appeared in both the pilot and its reused footage for "The Menagerie", however, this is information is not supported by any of the documentation made during either production.