There is a lot of worry in the entertainment industry and among fans about Mark Harmon, the beloved 72-year-old actor best known for his role as Leroy Jethro Gibbs on *NCIS*. Harmon has won the hearts of millions of people with his talent and hard work over the course of his decades-long career.
Harmon is a well-known actor, thanks to his big break on “St. Elsewhere” and his long run on “NCIS.” He is “an enduring symbol of strength and integrity” because of how he played Gibbs, the tough leader of the Naval Criminal Investigative Service.
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