Leroy Jethro Gibbs, portrayed by Mark Harmon on “NCIS,” adheres strictly to a set of rules, instilling them in his team members as well. One such rule, “never apologize,” is prominently featured throughout the series and pays homage to a line from John Wayne’s character in “She Wore a Yellow Ribbon.” Harmon, who respects Gibbs’ rules, believes they add depth to his character, providing a moral compass and structure.
Despite Gibbs’ no-nonsense attitude and penchant for head-slapping, Harmon acknowledges the impact of these rules on Gibbs’ persona. While Harmon’s departure from the show in Season 19 raised questions about Gibbs’ future, the possibility of his return remains open, with Harmon hinting at potential comebacks in subsequent seasons.