Revealing mistake: When we see the first segment of marines in a firefight in Afghanistan, a couple of marines take cover next to a wall with a tyre on the ground. When they hit the ground/wall, The Wall moves. (00:31:50)
Continuity mistake: Gibbs places a stack of photos down on the picture of the captain when speaking to him. When the shot changes, the stack of photos has moved off the photo of the captain. (00:07:00)
Visible crew/equipment: When Ziva is giving a background on the captain, watch the very faint reflections of the gang in the glass. There is a camera reflect visible moving behind Ziva. (00:06:00)
Continuity mistake: When DiNozzo is talking about the pictures on the film, he has the film in his hand. But as McGee speaks, Tony has his hand held out and open. (00:02:50)
Continuity mistake: At the start, DiNozzo is holding up his 1974 camera. When the shot changes, the way it's held changes. Take note of his finger in relation to the lens of the camera. (00:02:30)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.