Mark Harmon wasn’t just the face of NCIS. According to co-stars, he was the steady force that kept the show grounded for nearly two decades. Cast members often described him as disciplined, private, and deeply committed to the work. He led without noise, choosing structure and consistency over attention. As the show evolved and pressures grew, Harmon’s approach never changed. He absorbed responsibility quietly while allowing others to shine. When colleagues finally reflected on his role, it matc