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: 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: 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)
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: Fornell gives Gibbs a juice box when Gibbs stays with Fornell. Gibbs puts the straw into the box with the straw closest to him. Camera changes and now the straw is at the other end of the box. Since there is only 1 hole for a straw on a juice box it is clear the box has turned around. (00:25:35)
Singled Out - S4-E3
Continuity mistake: When Tony is talking with Jenny about Gibbs, he has his hands clenched up by his chin in the over-the-shoulder shot and down in his lap in the front angle. (00:03:25)
Singled Out - S4-E3
Continuity mistake: Tony places the blue folder in Jenny's tray on her desk neatly. When he goes to leave it is now propped up on one side of the tray. (00:04:25)
Singled Out - S4-E3
Continuity mistake: When McGee spots the tyre marks of the unknown car, he is holding the markers in his left hand out to the side. Camera changes and now he is holding them two handed in front of his chest. (00:09:30)
Singled Out - S4-E3
Continuity mistake: When Ziva is pointing at the map and explaining about how the driver was tailed, she is pointing with her right arm. Camera cuts and now it's her left hand. (00:20:35)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.