Visible crew/equipment: After Gibbs tells his team to go to Arnett's apartment, Ziva shares her opinion that Tony is more afraid of heights than Probalicious, then as McGee walks away some chalk T-marks are visible on the ground. (00:08:05)
Visible crew/equipment: Tony closes the mirror in Michael's apartment, when he does a camera is briefly in shot. (00:09:15)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.