Mark Harmon’s Departure from NCIS — Mark Harmon’s exit from NCIS has left a gaping hole in the hearts of fans everywhere. After nearly two decades as the stoic and commanding Special Agent Leroy Jethro Gibbs, Harmon reportedly decided to step away due to a mix of personal considerations and growing frustration with the show’s creative path. Sources close to the production hint that disagreements over storylines and character development made it increasingly challenging for him to stay fully comm