Abby tells Gibbs that it has been 126 days that "Tony, McGee and Ziva have been gone". That is also the number of days between the original U.S. air dates of the season 5 finale and this episode.
When Agent McGee pulls up a picture of Agent Lee's NCIS ID after a phone records check, the Issue # for her ID is 867-5309, the same number in the Tommy Tutone song "867-5309/Jenny".
McNickname: McShipmate (by DiNozzo)