Season 6. Episodes - Cloak & Dagger.
In the first episode of the spinoff from JAG to NCIS "Ice Queen"
ravenous
125,000
Season 5, Episode 3
The first episode of season 7, "Truth or Consequences".
Season 5 - Episode 7 - Requiem
Rocky Carroll plays the character of the NCIS Director Leon Vance. Leon Vance joined the NCIS Cast in Season 5. His first appearance was on Episode 14 of NCIS Season 5 "Internal Affairs". He has been with the team ever since. He also took over as the NCIS Director when the existing character Jenny Shepard gets killed at the end of season 5 During Season 8, one of the old timers in NCIS tries to kill Leon for spoiling his plans years ago of becoming NCIS director. Gibbs and team figure that out and save him
Director Vance's wife (Jackie Vance) is played by Paula Newsome.
Pedro Hernandez
None. Gibbs and DiNozzo are the two characters who have been present in every single episode of NCIS that has aired till date.
Gibbs does not become director of NCIS from what we know thus far. We are even told in the episode Hiatus That Gibbs couldn't be director do to his lack of patience. This is demonstrated in the episode Trojan Horse when Gibbs temporarily fills in for Jenny as acting director. He tends to skip over a lot of protocol and paper work.
No. All the main characters - Gibbs, Tony, Ziva, McGee, Abby, Ducky, Vance are going to be part of NCIS Season 9