Son of Mark Harmon and Pam Dawber.
Grandson of Tom Harmon and Elyse Knox.
Nephew of Kelly Harmon and Kristin Harmon.
Cousin of Tracy Nelson , Matthew Nelson , Gunnar Nelson , and Sam Nelson.
Older brother of Ty Harmon (Ty Christian Harmon).
Surfer and kick-boxer.
Played the younger version of his fathers (Mark Harmon) character, Leroy Jethro Gibbs, in several flashback scenes on "NCIS".
