or nearly two decades, NCIS fans have been captivated by Special Agent Leroy Jethro Gibbs, portrayed by Mark Harmon. As whispers of Harmon’s potential exit in Season 19 swirled, the impact on fans and co-stars was palpable. This article delves into the reflections of Harmon’s esteemed co-stars, revealing the profound influence he had on the show and its cast.

David McCallum (Dr. Donald “Ducky” Mallard):
McCallum recalls the difficult early days of NCIS and credits Harmon for bringing order and stability to the production. “There was always some degree of confusion,” McCallum said, “but it’s all gone now. Mark was instrumental in getting our home in order. I sincerely thank him for that.”

Michael Weatherly (Anthony DiNozzo):
Weatherly describes Harmon as a rarity in the entertainment industry, a “very straightforward, approachable, calm, assertive guy” devoid of celebrity pretense. His admiration extends to recognizing Harmon’s influence on his own career, particularly when Weatherly took on a lead role in “Bull.”

Cote de Pablo (Ziva David):
De Pablo focuses on Harmon’s unwavering commitment to innovation and excellence. She acknowledges Harmon’s unwavering commitment to pushing creative boundaries, citing him as a mentor and father figure who encouraged her professional and personal development.

Sean Murray (Tim McGee):
Murray credits Harmon for the show’s enduring success, saying, “We wouldn’t be here 16 years later if it wasn’t for Harmon.” Murray’s early encounters with Harmon during “Hearts of the West” left a lasting impression, highlighting Harmon’s professionalism and work ethic.

Pam Dawber (Marcie Warren):
Harmon’s wife, Dawber, characterizes him as a selfless person motivated by the desire for harmony and prosperity. Her views highlight Harmon’s dedication to the greater good, which ensures that the ensemble cast runs well.

Brian Dietzen (Jimmy Palmer):
Dietzen reveals the complexities of his role as the medical examiner, Jimmy Palmer. Harmon’s recognition of Dietzen’s talent emphasizes the collaborative nature of storytelling on NCIS. Dietzen praises Harmon for his mentorship and the positive atmosphere he fosters on set.

Wilmer Valderrama (Nick Torres):
Valderrama praises Harmon as a beacon of love and positivity, emphasizing his leadership approach. He playfully acknowledges their tight relationship, emphasizing the cast’s real friendliness.

Mark Harmon’s portrayal of Leroy Jethro Gibbs is marked by complexity and authenticity. His off-screen persona, characterized by warmth and humility, has profoundly influenced his co-stars and the overall dynamic of NCIS. The reflections of his colleagues paint a picture of a dedicated professional whose leadership and kindness have left an indelible mark on the show’s legacy.