Revealing mistake: When Kate is shot by Ari, Michael Weatherly flinches before the sound of the gunshot, in anticipation of the forthcoming squib explosion. (00:42:20)
Visible crew/equipment: On the rooftop, after Caitlin leaps in front of Gibbs and takes the bullet in her vest, just as Gibbs and Tony help Caitlin stand up, in this shot the blue crash mat is visible on the ground. (00:41:45)
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