Continuity mistake: After Senator Kiley asks Gibbs to keep his name out of it until after the vote, it cuts to Ziva holding Carrie McLellan's Academy graduation photo (gold frame looks like an 8x10). In the closeup Ziva places the framed photo back on the shelf, but that photo vanishes from the shelf in following shots. When Gibbs walks in, it seems that photo is on the table beside the couch. (00:07:30)
Visible crew/equipment: While McGee, Ziva, and Tony are in Carrie McLellan's home Ziva reads Carrie's cards, and an orange tape mark is visible on the carpet by her feet. (00:07:35)
Visible crew/equipment: After Gibbs has Caitlin hydrate herself Caitlin asks the COB to show her to the Commander's facilities, and as Gibbs exits the Wardroom, the two T-marks are visible on the floor where Caitlin and the COB had been standing. (00:27:10)
Agent Afloat - S6-E2
Continuity mistake: After Vance tells Gibbs to pack a bag because he'll be joining Tony in Cartagena, when it cuts to McGee he places his brown paper bag on the desk with the folded flap facing away from his keyboard, but next shot the bag faces the opposite way. (00:18:30)
Visible crew/equipment: When Vance enters the Annex to locate the old file, in the first overhead shot a green tape mark is visible on the floor, in front of Ziva and Tony. (00:32:45)
Continuity mistake: After Ducky finds the needle in the MRI machine it cuts to Gibbs stepping on the bubble wrap, and as Abby happily rolls toward Gibbs, in the two shots facing her the headband magnifiers are flipped down over Abby's eyes, but in the shot facing Gibbs the magnifiers are flipped up over Abby's head. (00:27:30)
Untouchable - S3-E20
Continuity mistake: When Ziva and Tony head out to bring in Lieutenant Napleton, in the first shot Tony grabs his jacket then holds it in his left hand, as he reaches down with his right hand to grab his backpack. Next shot Tony is now holding his jacket in his right hand, as he's reaching for his backpack with his left hand. (00:15:45)
In the Dark - S4-E22
Visible crew/equipment: At the start, when Mr. Scott's assistant walks in, the T-mark is visible on the floor in front of the darkroom's door. (00:05:00)
Continuity mistake: Director Shepard has long nails with a French manicure, but when McGee gives her the envelope from Gibbs, in the closeup Jenny's nails are short and unpolished while she holds the old photo of herself. (00:43:10)
Visible crew/equipment: When Ducky and Jimmy start working on The Meat Puzzle, Ducky says, "Let's put Adam on the left and Eve on the right." In the next shot a crew member wearing a red shirt and khakis is visible at the right side of the screen. (00:05:55)
Visible crew/equipment: When Mike tells Gibbs about the September 11 terrorist attacks, Gibbs needs to hurl the steak he just ate. Then just as Gibbs rushes toward the trash bin, in the shot from behind the bin, the camera and a crew member are visible on the right side of the screen. (00:30:05)
Visible crew/equipment: When Director Shepard apologizes to Tony during their phone conversation, Tony begins to cite a Gibbs rule, "Never apologize," and in the wide shot as Jenny finishes, "it's a sign of weakness," the camera is visible at the right side of the screen. (00:14:45)
Visible crew/equipment: When Tony drives into the hangar with Brian taped to the steering wheel, just as Ziva gets out of the car the reflections of numerous crew members are visible on the rear of the car. (00:39:50)
Visible crew/equipment: When Gibbs joins Abby and McGee in the Forensic Lab, in two shots facing McGee as he tells Gibbs about working a different angle and explains it, a crew member wearing a black short-sleeve shirt is visible on the right side of the screen. (00:16:55)
Untouchable - S3-E20
Visible crew/equipment: After Abby has convinced Jimmy to begin the autopsy, Ducky soon applauds Jimmy's initiative. As this enjoyable scene continues, when Mrs. Mallard walks in, just as Ducky says, "We did go for a ride, Mother," the hand of a crew member is visible on the lab fridge, at the right side of the screen. (00:29:45)
Untouchable - S3-E20
Deliberate mistake: When Tony's holding the cat's carrot toy he's nearly bitten, and the Probies laugh. Then while Tony directs his amusing fictional rant at one Probie, just as Tony asks, "Getting a kick out of this now, think this is funny?" this closeup is flipped. (00:08:50)
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)
Forced Entry - S2-E9
Continuity mistake: While Caitlin and Tony are at the hospital in Jeremy Davison's room, when Michelle walks in there are two closeups of Jeremy handcuffed to the bed rail. In the first closeup the handcuff is around his wrist with the double bar facing up, but in the second closeup as Caitlin uncuffs him it's the opposite way, with the single bar facing up. (00:27:55)
Visible crew/equipment: When Agent Fornell follows Gibbs for a private chat (in the elevator) there's an overhead long shot of Caitlin, Tony, and Fornell's two agents. It then cuts to a shot facing Caitlin, and we can see the white mat taped to the floor with black tape (which was not in the previous shot), at the bottom of the screen. (00:22:50)
Bikini Wax - S2-E18
Visible crew/equipment: When Gibbs joins Caitlin on the beach just as she finishes up her call, in the wide shots their two reddish T-marks (plastic type) are visible on the sand, where each of them stand. (00:06:20)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.