Visible crew/equipment: When Gibbs and Ziva are in the "safehouse" Ziva set up for Ari, a crew member and his boom microphone are seen on the left of the screen, right before Gibbs climbs the ladder to remove the hidden camera spying on them. (00:30:10)
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 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)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.