CultureMark Harmon and Austin Stowell discuss playing Gibbs in “NCIS”

Mark Harmon, who portrayed Leroy Jethro Gibbs for 18 seasons on “NCIS,” talks with Austin Stowell, who plays a younger Gibbs in prequel “NCIS: Origins.” They discuss the character, the beginnings of their acting careers and what is ahead in the prequel’s third season.