Visible crew/equipment: While Gibbs and Alex are in the stateroom with Kasey and Curt, when Kasey tells them about the polyps on her vocal chords, the microphone can be seen hovering in front of Kasey, at the bottom of the screen. (00:28:45)
Visible crew/equipment: When the couple walk into the convenience store the man leads the blindfolded woman, and when they stop in front of the display coolers, their two yellow and orange tape marks are visible on the floor in this shot (the tape marks are gone in the following overhead shot). (00:10:00)
Visible crew/equipment: While Gibbs is in Forensics with Abby and McGee, they inform him about the data recovery from Commander Reza's car. When Abby tells Gibbs that someone hated technology more than him, Abby says, "Mind blown," and at the start of the next shot, the boom mic dips into view above Gibbs. (00:21:00)
Visible crew/equipment: After Gibbs refuses to make a deal with Triff, just as Gibbs and McGee exit the prison's visitor cell, the shadow of the boom operator holding the boom pole/mic can be seen on the walls behind them. (00:32:30)
Visible crew/equipment: At the tuxedo shop, after Tim's phone conversation with Delilah, when Ellie says, "I guess that's that, hey decision made," in the next shot facing Tim (he's standing in front of a trifold mirror), the reflection of the boom mic is visible at the top, right corner of the screen. (00:01:55)
Visible crew/equipment: After Gibbs leaves McGee at the hospital, when it cuts to the bar with Palumbo at the pool table, there are multiple yellow and orange T-marks on the floor by the bar behind him. (00:27:15)
Rendezvous - S14-E24
Visible crew/equipment: When McGee and Torres enter Hudson's motor home, the green T-mark is visible on the floor just as McGee lifts the case lid. (00:12:35)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.