For nearly two decades, Mark Harmon didn’t just play Special Agent Leroy Jethro Gibbs — he was the glue that held NCIS together. Calm, intense, and endlessly respected, Gibbs became an icon of loyalty, leadership, and mystery. But it was Harmon’s grounded energy behind the scenes that made the show a hit.
Crew members and cast have long praised Harmon for his professionalism and kindness. He wasn’t flashy or loud — he led by example. His departure in Season 19 felt like the end of an era, but even now, his presence still lingers in every “Rule 51” and hushed reference to Gibbs.
Fans haven’t stopped hoping for a return — even just a cameo. Because let’s face it: NCIS just isn’t the same without Gibbs.
