Visible crew/equipment: While Ducky starts to tell Jimmy about an English earl, when Gibbs walks into Autopsy, the reflection of crew members are visible on the steel door's surface. (00:08:35)
Continuity mistake: When Gibbs thumps Tony on the back at the storage locker, his hand is balled up in a fist. In the next shot, Gibbs' hand is extended flat. The pen in Gibbs' hand also disappears. (00:04:45)
Character mistake: In isolation, Tony mentions John Travolta and says that he's known as the "king of cool." That nickname referred to Steve McQueen, not Travolta. (00:15:10)
Character mistake: When Kate mentions James Bond, and DiNozzo lists the actors who have played him, he forgets Timothy Dalton. As a self-proclaimed film buff, that's not a mistake he would make.
Visible crew/equipment: On the rooftop, after Caitlin leaps in front of Gibbs and takes the bullet in her vest, just as Gibbs and Tony help Caitlin stand up, in this shot the blue crash mat is visible on the ground. (00:41:45)
Revealing mistake: When Kate is shot by Ari, Michael Weatherly flinches before the sound of the gunshot, in anticipation of the forthcoming squib explosion. (00:42:20)
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.
Factual error: After Gerald gets back to NCIS HQ, he notes that he wasn't able to drive Ducky's Morgan; a stick. Abby brags about knowing how to drive a stick since she was ten. When asked what she drove that had stick, she answered, "Red '47 Ford half-ton with four on the floor and Bubba riding shotgun." When asked who Bubba was, she answered that he was the best coon dog in Jefferson Parish. If in fact Abby grew up in the city of New Orleans, as stated by McGee in the episode before, the dog would not have been the best coon dog in Jefferson Parish but Orleans Parish. No part of New Orleans is inside the Parish of Jefferson. If it was truly the best coon dog in Jefferson Parish then Abby would have lived in Metarie or Kenner, Louisiana, both of which are inside the parish limits of Jefferson Parish.
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)
Mind Games - S3-E3
Visible crew/equipment: While Gibbs and Tony are in the car chasing after Briggs, Gibbs is on his cell with McGee getting location updates, and just as Gibbs asks, "How far ahead is he?" the camera is visible behind Gibbs and Tony, by the back seat. (00:37:55)
Mind Games - S3-E3
Revealing mistake: When O'Neill starts taking Polaroid photos of Cassidy in the barn, Cassidy's blouse is properly buttoned up, but the second photo O'Neill takes shows Cassidy's blouse is being held together with a large safety pin, then the buttons are intact again. (00:39:10)
Silver War - S3-E4
Visible crew/equipment: When in Ducky and Jimmy are in autopsy alone, there is a cameraman in the reflection of the body cooler wall. (00:18:15)
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
Visible crew/equipment: At the re-enactment field, after Ziva pulls a gun on the two men in the graveyard, it then cuts to McGee and Tony with Kearns while Gibbs is on his cell. Two shots later, the camera becomes visible on the right side of the screen, just as Gibbs walks past it. (00:40:45)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.