Continuity mistake: Gibbs holds up his father's WW2 era Hamilton watch and gives it to McGee. While McGee holds the watch to read the engraving on the caseback, the buckle strap is in McGee's right hand. In the closeup of the caseback the crown is at the bottom (which would mean the buckle strap is in McGee's left hand), but in the two shots facing McGee the crown is at the top (which would also make the engraving upside down while McGee reads it). (00:40:20)
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: 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)
Continuity mistake: When the helicopter lands on the helo deck there's a white aiming circle with a lineup line at the center, but after Gibbs and Palmer exit the helicopter the flight deck is again seen in a long shot, and the white lineup line is gone. (00:03:30)
Continuity mistake: After Marie's smoke alarm incident Marie starts to talk about Alex's dad coming to dinner, and when Alex walks away from the bouquet of flowers the ribbon has been removed from the bouquet, but next shot it's once again tied around the bouquet. (00:31:50)
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: 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)
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)
Continuity mistake: When Gibbs and McGee are alone in the kitchen, in the closeups of McGee when he raises his left hand (such as when he takes the watch from Gibbs) he is not wearing a ring, but in the consecutive shots of the duo McGee is wearing a ring on his left hand (also odd, since it looks like McGee's wedding band). (00:39:10)
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)
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)
Rendezvous - S14-E24
Revealing mistake: While McGee is bandaging what's left of Dean's arm you can see the arm is way to long to have the hand missing, you can tell the actor's hand is still there.
Keep Going - S14-E13
Other mistake: While panning the front of Gibbs' home, the roof of one vehicle and the windshield/passenger mirror of a second can be seen behind the gate/fence in Gibbs' driveway behind his truck. He lives alone and does not share a driveway with other homes. In reality, Gibbs' home is located at 2647 S. Magnolia Ave in LA, and the vehicles likely belong to the real residents/homeowner. (00:39:20)
Answer: I hadn't seen the backdoor pilots yet but while it wasn't explicitly stated, at least onscreen, I heard somewhere Vivian got either fired from NCIS due to jeopardizing a case, got resigned from the agency, or transferred to the FBI.
Raykvega423