This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Commander Jett Reno was a 23rd century female Human Federation Starfleet officer. She served as an engineer aboard the USS Hiawatha during the Federation-Klingon War. She survived the crash landing of the Hiawatha and managed to sustain injured crew members for ten months and eleven days before being rescued by a landing party from the USS Discovery in 2257. (DIS: "Brother")
At some point following her rescue, she was officially assigned to the Discovery. Around Stardate 1834.2512, when the ship's computers were infected with a power virus, Reno was assigned to put firewalls around the critical propulsion systems (i.e., the spore drive). While in Paul Stamets's engineering lab, Reno verbally sparred with him over the merits of the spore drive. Reno, Stamets, and Sylvia Tilly were trapped in the lab shortly thereafter, and had to contend with leaking energy relays and the escape of a multidimensional fungal parasite. Reno and Stamets worked together to save Tilly from the parasite, but were ultimately unsuccessful after the lifeform infected them with hallucinogenic spores. (DIS: "An Obol for Charon")