Revealing mistake: Kate pulls the record up on the screen near the start and there is some writing on the file. This is a copy of the file she has in her hands. However the writing on the file as seen on the screen is Kate's next few lines. (00:09:30)
Continuity mistake: When McGee finds out about the poison ivy, he is holding the bat in 1 hand. Camera cuts and he is holding it in 2 hands. (00:16:20)
Continuity mistake: Just after seeing Ducky, McGee is talking to Abby. He pulls a face due to his current situation, the camera cuts, and his facial expression is completely different. (00:26:50)
Audio problem: When Moore's widow sees her lover being brought in, she shouts "Roger!" - but her lips don't move. (00:33:05)
Continuity mistake: When the SGT is in the interrogation room, as Gibbs sits down, the SGT's hands are on the table. Camera cuts to Gibbs sitting down, but look behind him at the mirror and the Sargent's hands are not on the table in the reflection. (00:33:20)
Continuity mistake: When Mrs. Moore is in the interrogation room, her hands are flat on the table then clenched instantly. (00:34:00)
Other mistake: It's the same license plate (107TIX) on Runyon's truck when the video footage is enhanced by Abby as the Ford sedan in S2 E10 "Chained" when Dinnozo and Jeffery leave the cabin.
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.