For 18 seasons (and four season 19 episodes), Mark Harmon starred as former U.S. Marine Corps scout sniper–turned–special agent Leroy Jethro Gibbs. "What has always drawn me here is the character I ...

Mark Harmon, who starred as Leroy Jethro Gibbs in "NCIS," left the show in 2021, and executive producer Charles Floyd Johnson said that might have been the end.

Mark Harmon might not be playing Gibbs anymore, but the actor has taken one of the NCIS character’s famous bits of advice to heart.

Add Yahoo as a preferred source to see more of our stories on Google. Mark Harmon is shedding a little light on going from being the lead on NCIS to working more behind the scenes on NCIS: Origins — ...

“NCIS” legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series “NCIS: Origins,” and he’s not coming alone. Harmon, 74, will make a rare guest appearance on “Origins” ...

Gibbs had plenty of rules during his time on NCIS, but only one of them is Mark Harmon's favorite — find out which rule he actually follows himself.

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