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
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)
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)
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)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.