In the Dark - S4-E22
Continuity mistake: When Ducky finds agent Lee's bra, he has some sticky labels in his hand in one shot and not in the next. (00:08:15)
In the Dark - S4-E22
Audio problem: When Abby is saying how she quit caffeine, the audio in the long shot doesn't match up with her mouth and is a clear overdub. (00:10:40)
In the Dark - S4-E22
Continuity mistake: Don gets a folder out of the bottom draw of his desk, camera changes and he's closing the top drawer. (00:13:15)
In the Dark - S4-E22
Continuity mistake: Don explains what the investigation is about, and while doing so he has his hands clasped together. Camera changes and they are spread apart. (00:13:20)
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)
In the Dark - S4-E22
Character mistake: On the message board visible in the background when the team is discussing Wong, the word "Artillery" is misspelled "Artillary". (00:18:20)
Continuity mistake: When Gibbs rejects the agent's file, Cynthia reaches for the ringing telephone with her right hand and Gibbs stops her with his left hand, but in the closeup Gibbs has his right hand on Cynthia's left hand. The closeup is a flipped shot, note their watches. (00:03:05)
Continuity mistake: When Tony tells Ziva he won't help her track down the remaining 'Smiths', a woman in the background is walking down the stairs; as Tony stands up, she takes two steps down from the lower landing. When the camera shot changes on Tony, she's back on the landing. (00:25:15)
Continuity mistake: When Jenny hands the Russian a cigarette the packet goes from green to red. (00:39:50)
Visible crew/equipment: When the car pulls away from the airport at the start the crew are reflected in the paintwork. (00:00:40)
Continuity mistake: When Jen is asking who's been in her study she points with her hand holding the letters at the end. Camera cuts and now she is holding the letters by the middle. (00:03:40)
Continuity mistake: When the mule asks for a cast he is told after surgery. At this point he raises his hand above his head. Camera cuts and it's back by his side. (00:06:30)
Factual error: When McGee is tracing the who sent the request for the polygraphs, the map bounces around the world. When he says Kurdistan, the map shows Armenia, and when it hits the Dominican Republic, McGee says Puerto Rico. (00:26:50)
Continuity mistake: This episode takes place on the same day as the previous episode, however, Jenny's hair is now much longer. (00:02:35)
Audio problem: When McGee is saying that he was raised a gentleman, his mouth doesn't move. (00:04:30)
Continuity mistake: McGee, Gibbs and Ziva all agree it is Saturday morning. However when the director looks at her phone, it says it's Thursday. (00:06:40)
Factual error: During the slow motion sequence in DC, landmarks from Los Angeles are in the background. (00:11:45)
Continuity mistake: During season 4 when Ziva gets worried about Tony being 'sick', she is researching y. Pestis, and telling Gibbs how worried she is about Tony having tests and the long-term effects of plague. In season 5, first episode, when Ducky comes to tell the group that the body is not Tony because "he didn't have plague", Ziva looks confused and says "before my time?"
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.