Continuity mistake: When the DEA agent walks up to Tony she stretches her hand out and her fingers are held together neatly, Camera changes and her fingers are open. (00:11:00)
Continuity mistake: The way Claire holds her power putty changes from a clasped hand to a couple of fingers between shots. (00:11:00)
Continuity mistake: When McGee and Tony are discussing Ziva while leaning on the car, their hands are constantly moving between shots. (00:20:45)
Continuity mistake: We finally see that it is McGee tied up on the floor. When he is rolled over to see his face, there is a cigarette butt on the floor by his head. When the camera next shows him the butt has gone. (00:21:50)
Continuity mistake: When Tony is walking around Abby's lab, his jacket is constantly switching from buttoned to unbuttoned. (00:22:45)
Continuity mistake: When Abby says that Ziva is uniformly absent, she has her hands out of shot. Camera changes and you can see her pointing at Tony and McGee which should have been visible in the previous shot. (00:24:20)
Continuity mistake: When Heather comes in to talk to Tony, his grip on his phone receiver changes instantly. (00:24:20)
Continuity mistake: When Gibbs and Tony leave their respective rooms we see Gibbs close his door via the monitor in Tony's room. However when they emerge into the hallways Gibbs shuts his door again. (00:26:15)
Continuity mistake: When we see Ziva talking to Tony, she has some hair across her face that is constantly disappearing and reappearing. (00:32:15)
Continuity mistake: The blog post that the NCIS team pulls up starts differently to the one that is typed out at the start of the episode. (00:00:15 - 00:07:00)
Continuity mistake: The cop removes her scarf from round her neck. Camera changes and she repeats the action. (00:04:30)
Continuity mistake: When the metro cop leans out of the victim's car, her scarf is wrapped around her arm. Camera changes and it no longer is. (00:04:40)
Continuity mistake: When talking to the Metro cop about her scarf, she has her left hand on the steering wheel. Camera changes and we don't see her arm move. Camera changes again and now her left hand is on her scarf. (00:04:50)
Continuity mistake: When talking to the Judge, Tony puts his hands on his coat collar. During this shot, the camera changes and his hands have instantly disappeared. (00:09:30)
Continuity mistake: When DiNozzo runs from Metro, he jumps past a couple sat on the grass. We then see a shot of the metro officer, and back to DiNozzo who hasn't reached the couple yet. (00:10:40)
Continuity mistake: When Abby and McGee copy each other with the "You're not listening to me" line, Abby has her hand lowered. Camera cuts and now her hand is raised and she is pointing. (00:11:40)
Continuity mistake: When Tony is looking through his binoculars, he is holding them with one hand then 2 hands instantly. (00:29:00)
Continuity mistake: McGee rests his paintball gun to the screen left side of the metal post in the gate. Camera changes and now it's on the screen right side of the metal post. (00:29:30)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.