Visible crew/equipment: When Gibbs and Tony are in Vance's office, after viewing Abby's S-mine video Vance walks over to his desk, and the two green tape marks are visible on the floor where he stands. (00:26:25)
Continuity mistake: While Bishop and Torres are locked in the two jail cells, Bishop knocks out the glass from her barred window, but when Torres breaks the old toilet and says, "I really think we're stuck in here," Bishop's cell window glass is perfectly intact - we can see the reflection of all the bars. (00:07:10)
Visible crew/equipment: When Gibbs and Ellie are at Demint's property gate his daughter drives up, and when Margot gets out of her car the two red and pink T-marks (plastic type) are visible on the ground by Ellie's feet. (00:12:45)
Visible crew/equipment: While Ellie and Nick are undercover they meet Donnie, and when Ellie walks behind the store's counter the yellow T-mark is visible on the floor. (00:16:30)
Rendezvous - S14-E24
Visible crew/equipment: When McGee and Torres enter Hudson's motor home, the green T-mark is visible on the floor just as McGee lifts the case lid. (00:12:35)
Continuity mistake: When Gibbs and McGee are alone in the kitchen, in the closeups of McGee when he raises his left hand (such as when he takes the watch from Gibbs) he is not wearing a ring, but in the consecutive shots of the duo McGee is wearing a ring on his left hand (also odd, since it looks like McGee's wedding band). (00:39:10)
Visible crew/equipment: After Gibbs leaves McGee at the hospital, when it cuts to the bar with Palumbo at the pool table, there are multiple yellow and orange T-marks on the floor by the bar behind him. (00:27:15)
Visible crew/equipment: While Gibbs is in Forensics with Abby and McGee, they inform him about the data recovery from Commander Reza's car. When Abby tells Gibbs that someone hated technology more than him, Abby says, "Mind blown," and at the start of the next shot, the boom mic dips into view above Gibbs. (00:21:00)
Continuity mistake: During Delilah and Tim's dinner, when Delilah places corn on the cob onto Tim's plate note the positions of the broccoli and shrimp. In the following shots the broccoli and shrimp repeatedly switch to opposite positions. (00:13:45)
Continuity mistake: During their first day's investigation of the double homicide Tony is wearing a grey suit, white shirt, and burgundy tie. On the second day, while Tony is wearing a dark suit, light blue shirt and dark blue tie, when Gibbs tells Tony to go see what Ducky wants in Autopsy, Tony is back to wearing what he wore on their first day. Then at Tobett's house, Tony is again wearing the light blue shirt and dark blue tie. (00:04:30 - 00:31:00)
Visible crew/equipment: While Gibbs is at the diner with Dr. Taft and his wife he gets a call from Ellie, and when it cuts to the overhead shot of Gibbs, Ellie, and Tony walking toward each other, on the ground we can see the reddish chalk mark (for Gibbs) and two white chalk T-marks (for Tony and Ellie) where the three actors meet. (00:26:10)
Visible crew/equipment: When "Nanook" stands beside his desk while he tells Tony and Ellie about Delilah's mother, there's a blue T-mark on the floor by McGee's feet. (00:03:05)
Revealing mistake: While Ellie and George are in the attic, Ellie uses her laptop to access contact info and gets Richard Doogan's DOD military service record. There's a closeup of the laptop screen as she begins to read aloud, but the problem is part of the paragraph reads, "And he's only a few hours away in Kansas..." and especially "I need to update Gibbs" which are Ellie's lines in the dialogue with her brother. (00:16:45)
Visible crew/equipment: After Jimmy and Tony's chat, when Tony heads to the elevator Jimmy mutters that he hates being out of the loop. In the next overhead exterior shot of Tony's car, on the rear passenger window we can see the reflection of the boom operator walking and holding the boom pole/microphone. (00:21:30)
Visible crew/equipment: When Tony is with Captain O'Rourke in the parking lot, Borin approaches from behind. As O'Rourke turns to face Borin the actor's microphone has slipped out from under his shirt, between the buttons. Then when Borin says, "So will you," in the next shot facing O'Rourke and Tony, that mic is visible again. (00:38:10)
Crescent City: Part 1 - S11-E18
Visible crew/equipment: When Gibbs asks about the crime scene where Doyle was killed, just as LaSalle, Brody, and Gibbs head out the door, the white T-mark taped to the rug is visible near the door. (00:36:35)
Continuity mistake: When Tony is sitting at McGee's desk talking to Delilah, Tony's holding the phone to his left ear with his left hand, but in the overhead shot Tony's holding the phone to his right ear with his right hand. (00:15:50)
Visible crew/equipment: In the first shot of Ziva and Tony at the pizzeria, just as Fiero tells them about sales during liberty week, the green tape mark is visible on the floor between Tony's feet. (00:10:40)
Visible crew/equipment: When Gibbs and Ziva enter Second Chances to question the owner about Curtis, in the overhead shot Gibbs stops beside the counter, and the red tape mark is visible on the floor between his feet. (00:18:20)
Kill Screen - S8-E16
Visible crew/equipment: When McGee and Blake Martin are in Interrogation, in the shot facing McGee just as Gibbs sits down, the reflection of the camera operator is visible in the mirror, on the right side of the screen. (00:33:30)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.