Mark Harmon and Pam Dawber have been married since 1987 ... the couple started their family. Harmon and Dawber's older son, Sean, was born in 1988, while their younger son, Ty, was born in 1992.

When it came to asking out his wife Pam Dawber for the first time ... Today the couple share two children in their thirties, sons Sean, an actor (who has appeared on NCIS), and Ty, a screenwriter.

Mark Harmon and his wife Pam Dawber have been enjoying the holiday ... including Pam and their sons, Sean and Ty. The star has managed to maintain a healthy balance between being a well-known ...