Mark Harmon, the longtime face of NCIS, has opened up about what it truly meant to see his son, Sean Harmon, step into the role of young Gibbs in flashback scenes. While Mark has always kept his family life private, he recently admitted that having Sean portray a younger version of his iconic character stirred deep emotions. “There is pride involved,” Mark shared, reflecting on the moments he watched his son carry the legacy forward on screen.

Sean appeared in several key episodes, offering fans a rare glimpse into Gibbs’ past. According to Mark, those scenes held extra weight—not just for the story, but for the father-son connection they symbolized. “Seeing him in that role, knowing the responsibility that comes with it… it meant more than I expected,” he said.

Though Sean’s appearances were brief, they left a lasting impression on longtime viewers. Mark revealed that they never pushed the opportunity—it came naturally through the show’s development. “He earned it,” Mark added, with a quiet smile. For fans and family alike, those flashbacks now feel even more meaningful, serving as both a tribute to Gibbs and a proud moment for the Harmon family.