Ty Christian Harmon, 31. Mark and Dawber welcomed their second child, Ty Christian Harmon, in Los Angeles on June 25, 1992. Unlike his family, ...

Mark Harmon and Pam Dawber have two kids — Ty Christian Harmon and Sean Harmon, and both work in showbiz, yet one is more of an actor, while the other’s work happens behind-the-scenes.

While Mark Harmon boasts fame and success, he keeps a relatively low profile. The actor is not active on social media, and neither are his children, Sean Harmon and Ty Christian Harmon. Similar to ...

Dawber and Harmon have two sons, Sean Thomas Harmon, 34 who has played a young Gibbs in several NCIS episodes, and Ty Christian Harmon, 30.

One of Mark Harmon's sons appeared alongside him on NCIS Ron Wolfson/WireImage Elyse Knox, Mark Harmon, Pam Dawber and son Sean Harmon during 'Jesus Christ Superstar' Los Angeles Performance in August ...