ad news has come from Mark Harmon, who has spoken openly about the deep emotional toll he experienced after the loss of his longtime friend and NCIS co-star David McCallum. Harmon shared that McCallum was more than just a colleague—he was a mentor and a dear friend whose presence meant a great deal to him both on and off the set. According to Harmon, the grief of losing someone he worked beside for so many years left him feeling heartbroken and struggling with sadness for a long time. He reflected on McCallum’s kindness, wisdom, and unforgettable legacy, saying that the NCIS family will always cherish the memories they shared together. 💔🎬