As the season finale of @ncis_cbs airs tonight, #MarkHarmon who has portrayed #SpecialAgent #LeroyJethroGibbs, for the entirety of the #procedural’s run, reflects on the incredible journey of the most watched #television series in the #world. * • • • #NCIS #CBS @emilywickersham @wilmervalderrama #Bishop #Torres* • 🎼 by @allthingsfrazer 🎧