NCIS: Los Angeles 10×23 Promo “The Guardian” Season 10 Episode 23 Promo

NCIS: Los Angeles 10×23 “The Guardian” Season 10 Episode 23 Promo – Callen and Sam travel to the USS Allegiance in the Persian Gulf to work with Navy Captain Harmon “Harm” Rabb, Jr. (David James Elliott) when the NCIS team uncovers ISIS sympathizers who are targeting military locations, on NCIS: LOS ANGELES, Sunday, May 12th on CBS.