Visible crew/equipment: After Gibbs has Caitlin hydrate herself Caitlin asks the COB to show her to the Commander's facilities, and as Gibbs exits the Wardroom, the two T-marks are visible on the floor where Caitlin and the COB had been standing. (00:27:10)
Continuity mistake: When the tubs of acid are tipped up at the start we see a quick shot of both drums falling over. The angle changes and now the one drum is stood up again. (00:00:25)
Continuity mistake: We see the forklift truck driver climb down at the very start on to the floor. Camera does an instant cut and now he is on the bed of the lorry with no time to get there. (00:00:40)

Continuity mistake: At the start we see a security checkpoint searching a black car with a silver one waiting. A few seconds later a red one has appeared with no time to do so. (00:04:15)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.