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)
Continuity mistake: At the start, the phone screen is lit up, receiving a call. However, for one very quick shot, the phone screen is off and not receiving a call. (00:02:00)
Continuity mistake: At the start, the position of the phone on the floor changes between long and close-up shots. Note the floor markings in relation to the phone. (00:02:00)
Plot hole: At the start, we see the destroyer in the middle of a storm at night. In one of the shots of the boat, the bridge is all lit up like a Christmas tree. If that were the case, then anyone on the bridge wouldn't be able to see anything outside as they'll be blinded by the light. (00:00:20)
Continuity mistake: Gibbs gives his report to Vance, who opens the folder, and it's one page. Vance is then holding the folder open, and the camera changes to a second angle where you can't see the folder but can see Vance doesn't move his arm an inch. The camera changes to a third angle, and now the folder is closed. (00:18:20)
Continuity mistake: When Tony is holding out the phone to the ladies walking past him, you can see on the phone's screen Ziva and McGee, who are stood in front of a fixed screen at NCIS. In this shot of them, you can see part of the orange wall of the office. Gibbs then walks in next to McGee. When Tony realises Gibbs is there, the orange section is no longer visible, meaning the camera has changed position. Even if McGee, Gibbs, and Ziva had moved, the orange wall should still be visible since the camera is fixed. (00:16:50)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.