Continuity mistake: Vance checks on Langer's pulse and uses 4 fingers. Camera changes and he is using 2. (00:37:20)
Continuity mistake: When Vance shows Gibbs the access card belonging to their dead petty officer, the position of his hand on the card changes between shots. (00:38:35)
Agent Afloat - S6-E2
Continuity mistake: During the investigation of the dead wife's crime scene, the arms of the corpse change position from shot to shot throughout the scene, including a moment where the corpse's arms are crossed, then in the next shot Ducky is shown crossing her arms. Ducky is also shown crossing the same arm twice, and the guitar control also changes direction and position with respect to the body. (00:03:20 - 00:05:30)
Agent Afloat - S6-E2
Continuity mistake: After Vance tells Gibbs to pack a bag because he'll be joining Tony in Cartagena, when it cuts to McGee he places his brown paper bag on the desk with the folded flap facing away from his keyboard, but next shot the bag faces the opposite way. (00:18:30)
Agent Afloat - S6-E2
Continuity mistake: After Abby confirms it's snot, the screen loads up a picture. However this image isn't on the screen a second later. (00:20:30)
Agent Afloat - S6-E2
Continuity mistake: On the carrier, Ziva and Tony are walking down a corridor. A crewman says "excuse me" and squeezes past, only to vanish instantly. (00:26:40)
Agent Afloat - S6-E2
Continuity mistake: Near the end, several of the items on Ziva's desk change orientation from one shot to the next.
Continuity mistake: When Abby is wiping the table at the start, her hand position jumps instantly. (00:04:15)
Continuity mistake: After Senator Kiley asks Gibbs to keep his name out of it until after the vote, it cuts to Ziva holding Carrie McLellan's Academy graduation photo (gold frame looks like an 8x10). In the closeup Ziva places the framed photo back on the shelf, but that photo vanishes from the shelf in following shots. When Gibbs walks in, it seems that photo is on the table beside the couch. (00:07:30)
Continuity mistake: When Gibbs and his father drive up to Winslow's house, in the shot facing Jackson he holds out the bottle of Kentucky bourbon with his left hand, but in the next shot facing Gibbs it's held out in Jackson's right hand, then it's back in his left hand. (00:18:45)
Continuity mistake: At the end, when Jackson holds out the key to the Dodge Challenger, in the closeup the key case has its snap closure face up with the key facing Gibbs, but next shot the key case is upside down with the key facing Jackson. (00:40:25)
Continuity mistake: During the conversation between Jackson and Ziva, a $20 bill is dropped, face down. When Ziva bends down to pick it up, the bill is now face up.
Continuity mistake: Episode "Heartland": In the first five minutes of the show, after the guys are beaten up in the alley, when the black guy is laid down on the ground there is a blood stain on The Wall, behind where he was standing. When the other guys go to the white guy's aid the blood stain is gone, for about 3-4 shots. When the NCIS team is there gathering evidence the blood is back on The Wall.
Nine Lives - S6-E5
Continuity mistake: When Fornell walks past the reporters at the court house he passes The Wall. Camera cuts and he has jumped back and isn't near The Wall. (00:36:30)
Murder 2.0 - S6-E6
Continuity mistake: When NCIS catches the killer, the way he holds a dead man's switch changes. In some shots, he holds it with all five fingers, and in others he holds it with his middle two fingers and thumb, with his index and pinkie fingers extended. (00:39:45)
Murder 2.0 - S6-E6
Continuity mistake: At the end, McGee has his headphones in both ears. Camera changes and now 1 earphone is out. (00:40:20)
Continuity mistake: When Tony and the new recruit are discussing working for Gibbs, the recruit has part of the folder in his hand. Camera changes and his hand is empty. (00:15:50)
Continuity mistake: Ducky opens the agent's file. However it's closed in the next shot. (00:21:00)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.