Continuity mistake: When Ziva dumps the four bundles of $100.00 bills on the bed, they all land face up. Then the scene changes to Tony taking a picture of them. Back to the bundles, and now only three are face up and one is face down, with no one touching them. (00:10:40)
Continuity mistake: When DiNozzo is on the phone at McGee's desk, he is fiddling with something that is on an open folder/file of a suspect. When the shot changes, this item has gone. (00:15:20)
Continuity mistake: Gibbs says about the waitress taking things personally in the diner. When he says this, he gestures with his thumb, which turns into an index finger in the shot without time to switch. (00:12:20)
Continuity mistake: When Gibbs and his dad are driving and Gibbs asks if his dad has eaten since yesterday, his arm is either out the window or down by his side depending on the shot. (00:10:50)
Continuity mistake: At the start, when DiNozzo is explaining what's up with Gibbs, McGee has his hands on his keyboard as if typing. When the shot changes, he's now moving his keyboard by the sides. (00:03:00)
Continuity mistake: The way McGee holds the phone for Daniel to look at the code changes between shots. Note his thumb. (00:13:30)
Continuity mistake: Towards the end, Gibbs shows the suspect a photo of the victim on the floor. However, when he asks where Marie is, the photo has gone. (00:34:30)
Continuity mistake: When Gibbs is doing the interview near the end, he puts a photo on the desk. When the shot changes, the gap between the photo and the edge of the table is significantly reduced. (00:33:40)
Continuity mistake: McGee is asked if he's looking to move to the private sector, and his hand is not by his chin. When the camera changes, his hand is now on his chin. (00:19:40)
Continuity mistake: When we see McGee in the interrogation room for the first time, he has his hands clasped in front of him. When the shot changes, his hands are lowered. (00:18:30)
Continuity mistake: When being questioned, they put a picture on the table in front of Ziva. In this shot, she has her arms on the table, palm up. When the shot changes, her hands are now palm down. (00:21:20)
Continuity mistake: On the stakeout, Parsons asks McGee what the tracker on his phone does. When he does so, he takes a drink from his cup straw. When the shot changes, he is no longer having a drink. (00:08:40)
Continuity mistake: When Tony says he has watched The Italian Job twice, he holds his hand up. When the shot changes to a longer shot, his arm is down and he raises it again. (00:02:10)
Continuity mistake: At the end, the way Ziva points to the photo on The Wall changes from one finger to an open hand between shots. (00:37:15)
Continuity mistake: When Jimmy and Ducky are giving a run-down of the suspect to Gibbs, Jimmy puts a Sharpie in his mouth and lowers his hand. When the shot changes, he's got his hand on the Sharpie again. (00:23:50)
Continuity mistake: When McGee tells Tony to stop with the pen, Tony has his thumb up in the rear shot and down in the front shot. (00:04:20)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.