Revealing mistake: When Tony takes the book off Ziva, look at the cover. It's upside down. (00:10:20)
Lost & Found - S5-E9
Revealing mistake: The newspaper article on Lt Col Mann repeats the same few paragraphs throughout. Slow motion helps but is not required to spot this mistake. (00:12:20)
Revealing mistake: When Ducky opens the fridge and uncovers the body, the man's eyes twitch. (00:21:20)
Revealing mistake: In a close up of the iPod there is 1 song on the play list, playing at the 29 second mark. However, the icon to indicate that the iPod is on repeat is missing. Therefore, the iPod has only been playing for 29 seconds, despite the fact the crew left a good time before the team arrived. (00:07:20)
Revealing mistake: At the start, when the brain is being passed around you can see a fixed tube connecting to the student's arm to presumably pump the mercury into his hand. (00:01:20)
Revealing mistake: Part 1 - As Tony eats his donut, and spills the jelly on his shirt, it's clear that (the actor) is moving his body to make that 'accident' happen as scripted. As the jelly begins to leak out, he doesn't move; because it doesn't fall as expected, he jerks suddenly, to make the jelly fall on his shirt. He stops moving, 'shocked' at this, holding the donut with both hands. Part 2 - The camera angle changes to 'behind' him, and he is only holding the donut with one hand. Part 3 - He then grabs at a napkin (just out of frame) to clean it off; the camera cuts to Ziva briefly, then back to Tony, who does not have any napkin. (00:24:55)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.