NCIS 16x17 Promo trailer Silent Service Silent Service (S16E17) is the seventeenth episode of season sixteen of "NCIS" airs on Tue Mar 26, 2019. NCIS stars Mark Harmon as Leroy Jethro Gibbs, Michael Weatherly as Anthony "Tony" DiNozzo and Pauley Perrette as Abby Sciuto.
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