NCIS: This is Mark Harmon's son in Episode 400 as a young Leroy Gibbs
NCIS
NCIS Leroy Gibbs character was based on creative imagination and various human models
Mark Harmon and Wife Pam Dawber - Secrets of the NCIS Star's Happily Married Life
NCIS Finally Reveals How Gibbs Gets His Boats Out of the Basement
NCIS: This Is Gibbs' Awesome Way Of Choosing Service Agents
NCIS: Here's what Côte de Pablo had to say about her first NCIS appearance
NCIS: The Hollywood Actor Who Was About To Play Mark Harmon's Gibbs
NCIS Cast Curiosities You Probably Didn't Know
New Mom! 'NCIS': Emily Wickersham Melts Hearts With Rare Photo Of Newborn Baby Boy!
NCIS David McCallum Recalls Hectic Rescue That Caused $25,000 damage
'NCIS' fans just realized something amazing about Sean Murray!
Coté de Pablo confirmed her relationship with actor Mark Harmon outside NCIS