Continuity mistake: When Fornell and Gibbs are talking in Gibbs' basement, Gibbs places a red storage box on some wood and there is a fair gap between the red box and the cardboard box that is next to it. When the camera changes, the boxes are almost touching with no-one touching it. (00:04:15)
Continuity mistake: When agent DiNozzo and agent Sacks are arguing on the stairs, Sacks proceeds down a flight of stairs. Director Sheppard then calls both of them to the top. When the camera changes, Sacks is level with DiNozzo despite having descended a flight just seconds before. (00:13:30)
Continuity mistake: When the bike and Mini turn down a road just after the crash at the start we see the car the bike is approaching from behind has got a junction to its right. Camera changes to behind the bike and now it is buildings to the right of the same car. We know it's the same car as the bike is still approaching the car from behind. (00:00:50)
Continuity mistake: We see Ziva take the photos out and place them on the interrogation table and ask the captain to point out their suspect. We then see the Captain pick up a photo. Camera changes to McGee and Tony behind the glass and we see Ziva getting the photos out and places them on the table again. (00:39:10)
Untouchable - S3-E20
Revealing mistake: When the Lieutenant is explaining how her gun was in the victim's house, the camera pans behind Gibbs. Pay close attention and you can see a very faint shadow move across his back. Since we see there is nothing behind him on numerous occasions, it can only be part of the film crew. (00:18:20)
Untouchable - S3-E20
Continuity mistake: When Gibbs is talking to the Lieutenant about her rights, his has his papers next to a green folder. Camera changes and the papers have vanished. (00:17:10)
Untouchable - S3-E20
Continuity mistake: When Gibbs is interviewing the LT, he has a green folder on the table. Camera changes and now there is white papers on top of the folder. (00:16:45)
Untouchable - S3-E20
Continuity mistake: McGee brings the food back to NCIS and there are 3 bags on the tray. Two are taken leaving one. We then see Tony take one leaving a fourth on the tray that wasn't there before. (00:14:35)
Untouchable - S3-E20
Continuity mistake: Ziva says how she has the same problem as Tony in regards to a neighbor. When she does we can see a red suit wearing agent entering the house. Camera cuts and he never appears. (00:09:20)
Untouchable - S3-E20
Revealing mistake: When Tony is winding the cat up in the carry basket, we see a side shot when the cat "attacks" him. However looking through the side of the cage, you can see the cat is nowhere in sight and therefore unable to attack Tony. (00:07:50)
Untouchable - S3-E20
Visible crew/equipment: At the start, the camera crew can be seen reflected in the car's paint as it pans past the car. (00:00:25)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.