Fans of NCIS continue to debate Mark Harmon’s departure as Leroy Jethro Gibbs after 18 seasons. Despite initial denials from CBS, Gary Cole’s Agent Parker replaced Gibbs in Season 19, leading to accusations of deception. Some fans are upset that Agent Parker took over as the new team leader instead of Tim McGee, Gibbs’ apparent heir. Showrunner Steven D. Binder responded, suggesting Gibbs and McGee may have discussed the future. However, fans remain disappointed, expressing their preference for McGee to take over Gibbs’ role.