Leon Vance was introduced midway through NCIS Season 5, and following the death of Jenny Shepard, he took over as director of ...
NCIS: Origins Season 1 is one of the latest trending prequel series, focusing on the NCIS franchise's iconic character Leroy Jethro Gibbs.
Mark Harmon is known as Leroy Jethro Gibbs on NCIS and its tough to imagine any other actors in the iconic role ...