Ensign Jana Haines was a female Human Starfleet officer who lived during the mid-23rd century. She served in the command division aboard the USS Enterprise under Captain James T. Kirk, during a historic five-year mission that starship undertook. She served as one of the ship's relief navigators and science officer in 2268. That year, she assumed both positions during Pavel Chekov's absence when a landing party to Gamma II went missing, captured by the Providers of Triskelion along with Captain Kirk and Lieutenant Uhura.