Continuity mistake: When Tony is going through the drawer there is nothing red in the overhead shot. However in the close up there is a red folder in the drawer. (00:06:20)
Continuity mistake: When McGee shows Abby the video, the first time it starts at 0:38, and when he shows it again it starts from 0:50. (00:19:00)
Continuity mistake: When McGee starts filming the fight, the women are on the floor. However when he shows the video to Abby they are stood up at the start. (00:19:00)
Witch Hunt - S4-E6
Continuity mistake: McGee is taking some photos of 3 bullet casings on some wood flooring. Take note of the casing to the upper right. Its position changes with no-one touching it. (00:06:20)
Once a Hero - S4-E8
Continuity mistake: The way Gibbs holds his ID out to the maintenance man changes between shots. In the first shot he has 2 fingers inside the ID in the second shot just his thumb is inside the ID. (00:07:40)
Once a Hero - S4-E8
Continuity mistake: When talking to Luis, his ID badge keeps moving and rotating without touching it. (00:08:20)
Once a Hero - S4-E8
Continuity mistake: When DiNozzo is resting at his desk, he has he feet crossed with his left foot on top of his right foot. When the shot changes his right foot is now on top. His hands have also gone from clenched to unclenched in the same shots. (00:20:25)
Continuity mistake: During the scene where Tim and sister Sarah are working on the past evening's timeline, Sarah's clothes lying on the counter change position between the wide shots and the close-ups. Also the plastic her shoes are sitting on in the wide shots disappears in the close-up when she removes them and when she picks up the baggie of money. The screen shot of the locations in the time line also change locations. The 9:30 and 10:00 individual locations show up in the Georgetown University area but when they zoom out to show all three locations, the two time location now show the George Washington University, Foggy Bottom area of D. C., and it shows Tim's residence as being in Arlington National Cemetery. (00:06:35 - 00:07:50)
Continuity mistake: When the mannequin is hit it's on the double yellow lines with another mannequin stood on the lines behind the first one. When the 4x4 drives off, the second mannequin has moved on its own from the double yellow line to the side with the other 2 upright male mannequins. (00:00:45)
Continuity mistake: At the start, Otto hits the mannequin straight forward. Camera changes and now the mannequin is to the side of the 4x4. After the mannequin is hit, the woman looks out of her side window to look at it. However when we see the 4x4 drive off the mannequin is now on the opposite side. (00:00:50)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.