The somber announcement of David McCallum’s passing at the age of 90 due to natural causes on September 25 saddened fans of NCIS. Mark Harmon, who has portrayed Leroy Jethro Gibbs since the show’s pilot in 2003, offered his condolences, reflecting, “David lived a remarkable, fulfilling life.”
“My thoughts are with Katherine and his loved ones,” Harmon expressed. McCallum’s colleagues, among them Wilmer Valderrama, paid tribute to the late actor. The official NCIS social media team expressed their sorrow on Instagram, acknowledging McCallum’s talents as both an actor and author. They expressed gratitude to CBS for being his home for many years and extended heartfelt condolences to his wife Katherine and the entire family.