Ngomo was a Starfleet admiral who was in Starfleet in the 2370s.
In 2371, she was on Earth. Following a transporter accident aboard the USS Defiant, which displaced Benjamin Sisko, Julian Bashir, and Jadzia Dax to 2024, Admiral Ngomo wanted to come aboard the starship and supervise the investigation. Kira Nerys expressed her appreciation for the admiral's offer; however, until it was determined what caused the accident and what happened to the missing senior staff members, Kira did not want anyone beaming to the ship. If the admiral came by shuttle, that was fine. (DS9: "Past Tense, Part I")