Continuity mistake: When Tony is eating the nuts, he holds the container near the top. Camera cuts and he holds it near the middle. (00:22:30)
Continuity mistake: When Gibbs is leaning on the desk talking about the beetle, he has his legs apart. Camera cuts and they are crossed. (00:17:20)
Revealing mistake: As Tony and McGee drive off the numberplate is reversed. (00:14:40)
Continuity mistake: When Tony and McGee drive off the rear window is half open. The camera shows the car driving away and the rear window is closed. (00:14:40)
Continuity mistake: When Tony and McGee are driving in the car near the start, Tony has a dark shirt on. As the car drives off his arm outside the window has a light coloured top on. (00:14:40)
See No Evil - S2-E1
Revealing mistake: When the team speed into the lot at the end, tyre marks are visible on the ground from previous takes. (00:34:40)
See No Evil - S2-E1
Revealing mistake: Just as Gibbs and Tony head to Mtec, we see a close up of the webcam on the General's computer. Note the brand name. It's been flipped. (00:16:40)
Revealing mistake: The shot when Gibbs shows up to the scene, as Ducky examines the "deceased" girl, you can see a pulse in her neck. (00:07:00)
A Weak Link - S1-E22
Revealing mistake: When Gibbs and Todd are walking into the church, the camera shadow can be seen going over the seats on the left hand side. There is no-one other than Gibbs and Todd moving and the shadows are not possible from them. (00:25:00)
A Weak Link - S1-E22
Audio problem: When Gibbs tells DiNozzo to check every rope and D-link, DiNozzo says "You got it boss" however his mouth only says "You got it" (00:17:00)
A Weak Link - S1-E22
Continuity mistake: When DiNozzo and Gibbs are looking around the garage, DiNozzo starts to put his gloves on. Camera cuts and he's holding his gloves again. (00:12:00)
The Truth Is Out There - S1-E17
Visible crew/equipment: When Gibbs is asking the 4 suspects who the woman was, a camera can be seen reflected in the TV screen. (00:35:00)
The Truth Is Out There - S1-E17
Continuity mistake: At the very start, Dinozzo says he needs to ask Kate a question, He has his backpack in his hand. Camera cuts to when he asks the question and his backpack is on his back. (00:01:40)
Continuity mistake: DiNozzo goes onto eBay to check the feedback of the dead officer. The feedback goes from a score of 1 with no star, to 87 with a blue star in the click of a button. (00:10:30)
Continuity mistake: When the woman is walking with Gibbs at the Naval base, she is doing her coat up in one shot, then has her hands in her pocket in the next. (00:08:15)
Continuity mistake: When Gibbs arrives at the Naval base in Orlando, we see the woman in a white coat and the coat is open at the bottom (she is doing the buttons up from top to bottom) and billowing In the Wind. Camera cuts and the coat is now perfectly still and closed at the bottom. (00:08:15)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.