Continuity mistake: When DiNozzo rings Gibbs, we can see Kate taking metal scrapings on a pole that has tape on it just above her hands. When we get a closeup of Kate, the tape is not there. (00:25:50)
Continuity mistake: When the lady at the base exchange is throwing stuff at Tony, Tony has a yellow shirt in his hands that disappears, only to be thrown again. (00:24:00)
Continuity mistake: At the end the little boy tells Gibbs the password he has chosen for his tree house. As he does, Gibbs is working on the railing at the opposite end to the ladder. Gibbs says it's a good password and to come up. However he is now at the end of the railing by the ladder. (00:39:50)
Continuity mistake: At the very end we see Gibbs working on the treehouse. As the little boy climbs the ladder, Gibbs is working on a railing. Camera changes and now he is stepped back from the railing. (00:42:00)
Continuity mistake: When DiNozzo is reading the ingredients of the brass stripper, he has 2 hands on the tin in one shot and just 1 hand in the next. (00:29:00)
Yankee White - S1-E1
Continuity mistake: When Caitlin leaves the Cafe, Tim holds the car door open for her and she gets in. He then closes the door and leans on it. Camera cuts to a different angle and now he is stood up straight and slightly back from the car, with no time to do so. (00:29:05)
Yankee White - S1-E1
Continuity mistake: Just after Gibbs lies down on the slab, we see a shot of Ducky smirking. In this shot, we see Gibbs in the background turn on to his side. Camera changes to Gibbs and he is on his back and then turns onto his side. (00:24:00)
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
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)
Continuity mistake: When Kate is putting all the pieces together about Suzanne, she has her hand up. Camera cuts and her arms are crossed. (00:40:20)
Continuity mistake: When Abbi asks Gibbs to smell the shirt, the way she holds the shirt changes instantly. (00:04:05)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.