NCIS has been on the air since 2003 — and the fan favorite drama is still going strong.
The CBS series follows a group of special agents from the Naval Criminal Investigative Service as they investigate various different crimes.
NCIS season 1 began with lead actors Mark Harmon, Sasha Alexander, Michael Weatherly, Pauley Perrette and the late David McCallum, however, the cast has consistently changed over the 20-plus seasons as actors have come and gone.
Harmon – who played Leroy Jethro Gibbs – left NCIS after 18 seasons in October 2021. Five seasons later, Rocky Carroll, who played Gibbs’ boss...
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