Visible crew/equipment: While Palmer and Ducky are with the deceased in Autopsy, just as Jimmy mentions that Keller only dated models and A-list celebrities, the reflections of the camera operator and camera are visible on the steel door. (00:26:40)
Visible crew/equipment: While Tony and Ziva are speaking with Tom Crawley about Taylor, the red and green tape marks are visible on the floor in overhead shots, such as when Crawley stands up. Also, near the end, while Gibbs, Ziva, and Tony are with Crawley and the models, more tape marks are visible again. (00:19:20)
Revealing mistake: The shot when Gibbs shows up to the scene, as Ducky examines the "deceased" girl, you can see a pulse in her neck. (00:07:00)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.