Continuity mistake: When Gibbs is outside Jenny's house and calls her land line, the folder on her lap is closed, then open, then closed again, without her touching it. (00:23:55)
Continuity mistake: When Gibbs asks Ducky what him and Ari talks about, Ducky puts his hands on his car. Camera changes and he repeats the motion. (00:16:50)
Continuity mistake: While Tony and Ziva are outside Ziva's hotel eating pizza, Ziva is eating the pizza in one shot with the slice in the shot, in the shot directly before this and directly after, the pizza is no where to be found and she is no longer chewing.
Mind Games - S3-E3
Continuity mistake: When the team are talking about Gibb's personal life, Tony's grip on his cup changes instantly. (00:12:30)
Silver War - S3-E4
Continuity mistake: When Abby realises she is like a Barbie doll, her hands are together by her chest. Camera cuts and one hand has moved away instantly. (00:24:00)
Silver War - S3-E4
Continuity mistake: When Ziva, Ducky, and Dr. Burns find the graveyard, Dr. Burns is visible between Ducky and Ziva's shoulders. She then disappears in the following wide shot, and appears again in the closeup. (00:39:40)
Silver War - S3-E4
Continuity mistake: When inside the Smithsonian, Tony is fooling around with a bear. The baseball hats on all 3 agents have black trim on the brim, then white trim, then black trim. Zeva says her hat has a 9mm hole, and pokes a finger through a hat with a black trim. Gibbs says it is for ventilation. Then she drives home, the hats have white trim, and hers has no hole.
Continuity mistake: At the start the girl on the webcam takes her gown off. Camera changes and now it's back on and done up. (00:00:50)
Continuity mistake: When Gibbs stops Sgt. Roberts from killing his neighbor, he holds out his ID badge. His hand jumps from the top of the wallet to the bottom, then back to the top. (00:31:20)
Under Covers - S3-E8
Continuity mistake: When Jenny joins Gibbs and Fornell in MTAC, she puts on a headset and lowers the microphone. In the next shot, she secures the headset and lowers the microphone a second time. (00:28:45)
Under Covers - S3-E8
Continuity mistake: When the assassin is getting ready to take Ziva to her room, he has a jacket covering his silenced pistol. However the jacket is constantly moving in relation to the end of the silencer. (00:35:00)
Under Covers - S3-E8
Continuity mistake: In S1 E15 "Enigma", about 30 minutes in, Gibbs takes out his flask and the engraving is "For Good Luck, Your Loving" with the bullet on it. At the end of this episode it's engraved with "Jethro, For Good Luck Love Shannon and Kelly".
Continuity mistake: In the scene where Chip first brings the evidence to Abby (after getting it from Mr. Palmer), in one shot, her spiderweb tattoo is on the right side of her neck, and Chip is standing to her right. In the next shot, her tattoo is on the left side of her neck, as it normally is, and Chip is standing to her left. (00:08:20)
Continuity mistake: While Gibbs and McGee are searching the dock area for Ziva and Tony they find the dead terrorist, and in all shots of the deceased his arms are raised, but in the one overhead long shot the arms are down by his sides. (00:23:25)
Continuity mistake: When Gibbs asks Abby to estimate how much time Wilkerson has in the car trunk, just as Abby says, "Depends on the age of the car," this shot is flipped, note Abby's neck tattoo switches sides. (00:10:25)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.