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After 14 seasons on our television screens, you’d think we would know all there is to know about NCIS. But even as one of the longest-running programs on TV, we were still able to uncover some facts that loyal viewers may not know. Here are some behind the scenes secrets about the CBS series.

1. Mark Harmon Almost Didn’t Make the Cast

Yes, you read that correctly. Mark Harmon, who stars as Supervisory Special Agent Leroy Jethro Gibbs, was almost passed over for the show. The show’s co-creator, Donald Bellisario, wasn’t sure if Harmon was a right fit for Gibbs. But after viewing the actor play Agent Simon Donovan on The West Wing, Bellisario was finally convinced that Harmon was the right man for the job.


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