Cover Story - S4-E20
Visible crew/equipment: At the very start, as the fire truck pulls up you can see a crew member pushing a trolley with a camera on reflected in the paintwork. (00:00:05)
In the Dark - S4-E22
Visible crew/equipment: At the start, when Mr. Scott's assistant walks in, the T-mark is visible on the floor in front of the darkroom's door. (00:05:00)
In the Dark - S4-E22
Visible crew/equipment: When Don explains how he was about to call NCIS, he leans over to get a folder out. When he does, the camera shadow can be seen moving along the back of his head. (00:13:50)
Visible crew/equipment: When the car pulls away from the airport at the start the crew are reflected in the paintwork. (00:00:40)
Visible crew/equipment: As Gibbs, Ziva and Tony enter the Nelson home with guns drawn; just after Ziva enters, a man can be seen reflected in the door's window (Gibbs and Tony are in frame, and there is no other character there). Tony enters, then Gibbs - and we see the cameraman reflected also. (00:19:45)
Visible crew/equipment: When Tony is pacing after they find out Kamal's identity, there is a green tape marker visible on the floor. (00:32:00)
Visible crew/equipment: Just as the blonde asks if she's needed to ID another photo, there is an overhead shot that includes the camera trolley wheel. (00:35:20)
Visible crew/equipment: When Ducky comes in explaining how the victim has one more thing to say, a red tape marker is visible on the floor. (00:37:05)
Visible crew/equipment: After Gibbs tells his team to go to Arnett's apartment, Ziva shares her opinion that Tony is more afraid of heights than Probalicious, then as McGee walks away some chalk T-marks are visible on the ground. (00:08:05)
Visible crew/equipment: Tony closes the mirror in Michael's apartment, when he does a camera is briefly in shot. (00:09:15)
Lost & Found - S5-E9
Visible crew/equipment: When Gibbs and McGee are talking to the kid at the start there is a camera shot moving past an empty chair. In this shot a shadow can be seen moving over the chair. (00:04:00)
Visible crew/equipment: At the very start, as Tony walks past Ziva, a green tape marker is visible on the floor by her. (00:00:10)
Visible crew/equipment: Lighting equipment is reflected in the director's sunglasses when she tells Tony and Ziva that they can have the rest of the trip off at the funeral. (00:03:30)
Visible crew/equipment: Two crew members are visible on the right lens of Jenny's sunglasses just before she enters the deserted diner. (00:23:15)
Visible crew/equipment: When Vance enters the Annex to locate the old file, in the first overhead shot a green tape mark is visible on the floor, in front of Ziva and Tony. (00:32:45)
Visible crew/equipment: When Abby drops the CDs there is a yellow tape marker by one of the cases. (00:52:00)
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