Retied The Knot! Vow Renewal! Mark Harmon & Pam Dawber Celebrate 30 Years Find out why the couple’s relationship is ‘stronger than it was’ years ago. By Stacy Pierre-Louis, March 24, 2017 Filed under: Mark Harmon, Pam Dawber YOU MIGHT ALSO LIKE Inside Mark Harmon’s ‘NCIS’ Feuds Inside 'Devastated' Mark Harmon's Secret Heartbreak!