Continuity mistake: When looking at the playboy magazine at the start, the pages change between shots. (00:01:50)
Continuity mistake: When Gibbs asks the kid where he got the gun, he has a notepad in his hand. Camera cuts and it's now a pen. (00:05:25)
Visible crew/equipment: When Ducky tells Gibbs the deceased doesn't have enough of a liver to determine time of death, as they walk past the door we see reflections of two people other than Ducky and Gibbs. (00:19:10)
Continuity mistake: The second time we see McGee bidding on clubs there is 1m 24s remaining. 3 seconds later he closes the window when Gibbs walks in, and there is 1m 24s still left. (00:21:00)
Visible crew/equipment: When Gibbs sits down to interview Noah, a red tape marker can be seen on the floor. (00:27:40)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.