![NCIS: Naval Criminal Investigative Service mistake picture](/images/screenshots/172000-172999/172255_sm.jpg)
In the Dark - S4-E22
Revealing mistake: When Tony is telling Gibbs & Ducky that Abby got a hit on the dead sailor's fingerprints, Gibbs takes the file from Tony; the camera shows the file, which appears to be a legitimate profile sheet, but in the comments section, is the script that Tony just read aloud. (00:07:36)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.