Yes.
do you have a photo of mark harmon going back to 1986
No, Mark Harmon plays Gibbs. And his name is Leroy Jethro Gibbs.
NCIS is currently airing season 10 there is no news yet if it will be back for a next season or not.
Official NCIS Season 8 Premiere - September 21, 2010
Yes. It has been confirmed that she will be back in season 7
Director Jenny Shapard
At the end of season 3 (Hiatus) Gibbs leaves the team, only to return and the start of season 4 and take back the role of headslapper, functional mute and all-around good guy. (most of the time! :P)
The 6th season of NCIS has just finished last week (mid May 2009) and there will be a 7th season starting at roughly the end of September 2009
Not that I recall, at least not as a regular character of the long running series. Back at that time, Mark Harmon was busy doctoring on St Elsewhere and Chicago Hope.
Yes, Mark Harmon married to Pam Dawber in 1987
As far as we are aware, they will all be back next season
It has been confirmed that she will be returning for season 7 of NCIS