Trivia: In one scene, Gibbs says that when Ducky was younger, he looked like Illya Kuryakin. This was the character David McCallum played on "The Man From U.N.C.L.E."
Trivia: Nina Foch plays Mrs Victoria Mallard, mother of Dr Donald Mallard (David McCallum). In real life, Foch was only nine years older than McCallum.
Answer: I hadn't seen the backdoor pilots yet but while it wasn't explicitly stated, at least onscreen, I heard somewhere Vivian got either fired from NCIS due to jeopardizing a case, got resigned from the agency, or transferred to the FBI.
Raykvega423