From Halopedia, the Halo wiki
Gabriella Dvørak is a Vice Admiral serving in the Office of Naval Intelligence.
ONI's Senior Communications Director, Commander Michael Sullivan arranged for journalist Benjamin Giraud to interview her during Giraud's series of biographical interviews about John-117 in 2558. In that year, the Autumn-class heavy cruiser UNSC Unto the Breach was her base of operations.
The particulars of Dvørak's service are unclear. By her account—in actuality ONI's pre-planned narrative—she was serving in Elysium City in 2524, when she had the rank of lieutenant. She also described seeing and being acquainted with John in Elysium City at this time; the original John was serving in the SPARTAN-II program, and his flash clone died in 2517. In reality, Dvørak had been on Dwarka in 2524 when she claimed to have taken part in the liberation of Elysium City, and had never set foot on Eridanus II.
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