Factual error: While the NCIS crew are working a crime scene, Ducky starts yet another parable about his past experiences, referring to the dating of an Indian skeleton by the caliber of the bullet, "a 40-75". He states that since he knew the year that the US Army used that caliber, he could accurately date the remains. Unfortunately for Ducky, the US Army never used a 40-75. It did, however authorize a contract for a 45-70 cartridge in 1873. (00:09:20)
Visible crew/equipment: While Caitlin and Jane Doe are talking about blueberries it cuts to the doctor telling Gibbs that he can't release Jane Doe, and at the start of the next shot the pink T-mark is visible on the floor in front of Gibbs. (00:13:10)
Continuity mistake: When Kate is putting all the pieces together about Suzanne, she has her hand up. Camera cuts and her arms are crossed. (00:40:20)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.