Leslie was a 23rd century Starfleet officer. He served aboard the USS Enterprise between 2265 and 2268, during the historic five-year mission. By 2266, he held the rank of lieutenant.Even though he was primarily assigned to the operations division, Lieutenant Leslie was a versatile officer who was cross-trained to serve in several departments as needed. In most of his duties on the Enterprise, he worked at the engineering station on the bridge, just next to the turbolift doors.Before he received his promotion, Leslie performed the duties of a helm officer on three missions. The first time occurred on stardate 1513.1, when the Enterprise orbited planet M-113. He took over the helm again on stardate 1704.2, after an infected Sulu abandoned his post. The third time happened on stardate 2124.5, when the ship discovered the rogue planet Gothos. After his promotion, he operated the helm four more times. The first one occurred on stardate 2817.6, when the Enterprise transported the Karidian Company of Players from Planet Q to Benecia. The next one happened on stardate 3018.2, when Lieutenant DeSalle was placed in command of the Enterprise during the mission to Pyris VII. The third one happened on the visit to the Shore Leave Planet on stardate 3025.3. His most noteworthy assignment at the helm occurred on stardate 3088.7, when he performed some tactical duties. Under Kirk's orders, he fired the starship's phasers and destroyed Lazarus' spaceship. Not only did this action seal the negative magnetic corridor, it also saved two universes from mutual destruction.On two separate occasions, Leslie sat in the Enterprise command chair and performed the tasks of a duty officer. The first time happened after he became a lieutenant on stardate 2126.1. He was the duty officer when Kirk and several other Enterprise officers safely escaped from Trelane of the planet Gothos. The second time happened on stardate 3088.7, when the starship investigated the cause of massive spatial disturbances on an iron-silica planet and encountered Lazarus.He was at the engineering station when the Enterprise crew first encountered Harcourt Fenton Mudd, learned the fate of Doctor Roger Korby, and visited Miri's homeworld. Later that year, he witnessed Doctor Simon Van Gelder burst onto the bridge with a phaser. The following year, he was at the same post when the Enterprise returned to Talos IV, pursued the Gorn ship, and orbited the Halkan homeworld. As the bridge engineer, he also was unable to stop a cordrazine-crazed Doctor Leonard McCoy from escaping the bridge.His engineering skills were put to the test in four missions. When the Enterprise accidentally hurled back in time to the year 1969, he helped repair the engineering systems for the voyage back to 2267. On stardate 3468.1, he helped Commander Spock and Lieutenant Hikaru Sulu in breaking the Enterprise free from Apollo's force field. On stardate 3614.9, he tried to restore the engineering station after Redjac took over the ship's computer systems. He also helped repair the engineering systems on stardate 3715.3, when Lieutenant Commander Montgomery Scott tried to break the starship free from Vaal's hold. Also noteworthy is the fact that he was the bridge engineer when two Starfleet commodores assumed command of the Enterprise. The first time happened on stardate 3479.4, when Commodore Stocker ordered the ship to enter the Romulan Neutral Zone. The second time occurred on stardate 4202.9, when Commodore Matt Decker used the Enterprise to attack the planet killer. Perhaps the only time that he came into contact with a royal dignitary while posted as a bridge engineer was when the Enterprise was under attack by a Klingon battle cruiser on stardate 4372.5. After Elaan, the Dohlman of Elas, entered the bridge, he offered his seat to her and performed his engineering duties while standing. He continued this until he was relieved by Scott.Early in his career, he guarded the Delta Vega holding cell containing Lieutenant Commander Gary Mitchell on stardate 1313.1. The following year, he was part of the security detail for a Beta III landing party. On Janus VI, he joined Lieutenant Commander Giotto's security team in the hunt for the Horta. His security duties increased on stardate 4523.3, when he was assigned to the security team aboard Deep Space Station K-7. While posted there, he helped end a bar brawl between the Klingons and the Enterprise crew. He also guarded the quadrotriticale storage compartment, apprehended Cyrano Jones for questioning, and assisted Kirk in uncovering the true identity of Arne Darvin. After the mission on K-7, he had several other notable assignments. On stardate 4768.3, he was part of the security detail for the Arret landing party. When Kirk, Spock, McCoy and Doctor Ann Mulhall beamed to the planet, Sargon prevented him from joining along. Later that year, he joined Sulu and beamed down to a Kohm village on Omega IV. He held custody of Captain Ronald Tracey after Kirk charged the captain of the USS Exeter for violating the Prime Directive. On stardate 5029.5, he was assigned to watch over Tommy Starnes when the Enterprise rescued the orphans of the Starnes Exploration Party. Later, he was posted by the turbolift doors after Starnes and the other children took control of the starship. When Kirk tried to regain control, he was unable to follow the captain's orders after Starnes transformed Kirk's words into incomprehensible gibberish.At times, Leslie helped Doctor McCoy in sickbay as a medical assistant. On two different occasions, he treated Spock. The first one occurred on stardate 1513.8, after the first officer was attacked and injured by the M-113 creature. The second one happened on stardate 3372.7, when Spock underwent a medical examination on Kirk's orders an examination which revealed that the first officer was suffering from the effects of pon farr.When the Enterprise was en route to the Malurian star system to investigate a distress call, he was at the navigation console as the starship encountered the interstellar space probe Nomad. After Nomad attacked Scott on the bridge, he was one of the two officers who helped carry the chief engineer to sickbay.Leslie served as a science officer on two different missions. Before he became a lieutenant, he joined the Alfa 177 geological survey team on stardate 1672.1, and survived the planet's harsh environment. As a lieutenant, he operated the Enterprise science station on stardate 3211.7 as the ship headed for Triskelion in search of Kirk, Lieutenant Nyota Uhura and Ensign Pavel Chekov.Leslie's final assignment occurred on stardate 5630.7, when Kirk discovered an assassination plot against Ambassador Kollos. He teamed up with Kirk, Spock and McCoy in response to the threat and ensured that no harm came to the Medusan ambassador. Show less «