The Cast of ‘NCIS’ Confirms What Fans Have Long Suspected About Working with Mark Harmon

Members of the NCIS cast have finally opened up about what it’s like to work with Mark Harmon, confirming the long-held belief that he’s the heart and soul of the show. Known for his role as the stoic and dedicated Leroy Jethro Gibbs, Harmon’s behind-the-scenes presence has been equally impactful. Co-stars have described him as a consummate professional who fosters a collaborative and welcoming environment on set. “Mark always leads by example,” one cast member shared. “His humility and dedication have set the tone for the entire team.”

While Harmon stepped back from his starring role in Season 19, his influence remains strong. Many cast and crew members credit him with creating a family-like atmosphere that has sustained the series for two decades. Fans, who have long suspected Harmon’s off-screen leadership mirrored his on-screen character, now have confirmation of his vital role in making NCIS the enduring success it is today.