Continuity mistake: Ziva tells Tony to stop being nice to her when doing the stakeout. When she does, in one shot her arm is on the car window, in the next shot it's not, then it's back again. (00:29:20)
Continuity mistake: The cracks in the windshield of Fornell's car change from the overhead to the ground level camera shots. This is before Fornell returns fire. (00:01:00)
Continuity mistake: When we see the pool balls on the table for the 1st time, their position changes drastically between shots. (00:03:20)
Continuity mistake: When Agent Sterling shows DiNozzo her badge, the way she holds it changes between shots. (00:11:40)
Continuity mistake: When McGee tells Sterling, the joke is over. Sterling's hands and the items in the changes from the rear and front camera angles. (00:32:30)
You Better Watch Out - S10-E10
Continuity mistake: When Jimmy is talking about the smell of dead bodies, his mask is either on or off depending on the shot. (00:02:40)
You Better Watch Out - S10-E10
Continuity mistake: When Tony's dad arrives at the NCIS office for Christmas, he is met at the elevator by Ziva. He is holding a Christmas present (which looks like a bouquet of flowers) with the 'red' end up. As the camera angle changes, he is now holding it 'red' side down. (00:28:25)
Continuity mistake: During the interrogation, DiNozzo holds up the petty officer's ID vertically and asks a question. When the shot changes, DiNozzo is holding it lower and now horizontally. (00:09:05)
Continuity mistake: When Tony wakes Ziva up, he grabs her wrist, and her fist is clenched in one shot and open in the next before returning to the closed position. (00:22:00)
Continuity mistake: When DiNozzo and Gibbs are trying to work out who the man in the hat is, Tony has the clicker up by his chest in one shot and lowered in the following shot. (00:27:30)
Continuity mistake: Abby says that McGee is the most helpful person with clipboards. When she does, the position of the clipboard in her arms is constantly changing between instant cuts. (00:03:30)
Continuity mistake: When we first see young Abby, the way she's holding her bear changes between shots. (00:04:50)
Continuity mistake: In the evidence locker, Ziva opens a folder and the white notepad is on the left-hand side. Camera changes to behind her, and now the white pad is on the right. (00:26:40)
Continuity mistake: We see a close-up of Kevin's poster that Ziva is holding. In the close-up, she is holding the poster on the right-hand side. When the shot changes to a wider shot showing Ziva and Tony, Ziva is no longer holding the poster on the right-hand side, but is now holding it on the bottom. (00:04:40)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.