Keyla Detmer

USS Shenzhou
Keyla Detmer Detmer at her station aboard the Shenzhou As a lieutenant junior grade, Detmer served aboard the USS Shenzhou under Captain Philippa Georgiou as the starship's helmsman in 2256. (DIS: "The Vulcan Hello")

She was injured at some point between the Battle of the Binary Stars and Michael Burnham's arrival on the USS Discovery. (DIS: "Context Is for Kings")

USS Discovery
Six months after the destruction of the Shenzhou, Detmer was promoted to full lieutenant and was assigned to serve as helm officer under Captain Gabriel Lorca on the USS Discovery, by which point she appeared to have cranial and ocular implants. Upon seeing mutineer Michael Burnham for the first time on the Discovery, she chose not to speak to her. (DIS: "Context Is for Kings")

Detmer was responsible for initiating the Discovery's spore drive, and was at the helm when the ship made attempts to reach Corvan II, both an initial abortive attempt, which saw her maneuver the ship out of the gravity well of an O-type star, and a second attempt, during which Detmer brought Discovery to a halt over the mining colony. (DIS: "The Butcher's Knife Cares Not for the Lamb's Cry")

Detmer in command Lt. Detmer in the captain's chair. After Discovery found itself in the mirror universe, Lt. Detmer was left in charge on the bridge while Lorca, Saru and Tyler participated in a briefing in engineering. Detmer called Lorca to the bridge when Discovery was approached by the ISS Cooper. After Lorca had the crew to assume their mirror identities, an alternate helmsman took over on the bridge, as Detmer's mirror counterpart was not aboard the Discovery, but the ISS Shenzhou. (DIS: "Despite Yourself")

In 2257, in recognition for her role in ending the Federation-Klingon War, Detmer was awarded the Starfleet Medal of Honor along with the Discovery's senior officers at a ceremony in Paris. (DIS: "Will You Take My Hand?")

Detmer was at the helm when Discovery responded to a distress call by the USS Enterprise. She was among the bridge officers present to witness the transfer of command codes when Captain Christopher Pike took command to investigate the red bursts, and identified herself as part of a bridge officer roll call Pike ordered. She and Joann Owosekun advised the away team's course piloting the landing pods, and their EV suit's thruster packs. (DIS: "Brother")

When Burnham decided to take the Discovery forward in time to the 32nd century, with no chance of return, Detmer was among the officers who volunteered to accompany her and leave behind her former life. (DIS: "Such Sweet Sorrow") Afterwards, Detmer, along with the rest of the volunteering Discovery crew was presumed dead by Starfleet, based on the testimonies of the USS Enterprise senior officers. (DIS: "Such Sweet Sorrow, Part 2")