Mark Harmon’s departure from “NCIS” after two decades has left fans stunned, with co-stars reflecting on his profound impact. Harmon’s portrayal of Leroy Jethro Gibbs was pivotal to the show’s enduring success, embodying a father figure both on and off-screen. Despite reports of tension between Harmon and Pauley Perrette, his decision to step away was met with sadness and disbelief among the cast, attributed to a desire for a break after decades in the industry. CBS Entertainment President Kelly Kahl hinted at the possibility of Harmon returning for special episodes, as “NCIS” adjusts to life without Gibbs.