David McCallum Shares Rare Behind-the-Scenes Stories From NCIS Fans of NCIS were recently treated to a special glimpse behind the scenes as David McCallum, the legendary actor who brought Dr. Donald “Ducky” Mallard to life, shared stories from his decades on the show. McCallum opened up about the camaraderie on set, revealing that while NCIS often deals with intense and emotional storylines, the cast and crew maintained a sense of humor and warmth that kept the atmosphere light. From playful pra