This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Commander Nhan was a 23rd century female Barzan Federation Starfleet officer. She served as an engineer aboard the USS Enterprise under Captain Christopher Pike in the year 2257. Along with Evan Connolly, she accompanied Captain Pike onto the USS Discovery when the Enterprise suffered a malfunction. She was also a part of the team that investigated the crashed wreckage of the USS Hiawatha. (DIS: "Brother")
Nhan accompanied Michael Burnham and Airiam to board Section 31 Headquarters, which lead to a series of events where she had to eject Airiam from the airlock before Control could take the Sphere's data. (DIS: "Project Daedalus")