Masquerade - S7-E14
Continuity mistake: When McGee is at the wedding there is one point where on the live feed, McGee can be seen covering his microphone with his hand. However when it cuts to McGee, his hands are not covering the microphone. (00:03:10)
Masquerade - S7-E14
Continuity mistake: When Gibbs has got the numbered yellow cones at the crime scene, they alternate from on his bandage to his hands between shots. (00:03:40)
Masquerade - S7-E14
Continuity mistake: When McGee is at the online wedding, a man with a green shirt and blue folder can be seen walking down the steps behind him. The same man can be seen preforming the same action a few seconds later. (00:03:00)
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