NCIS: Los Angeles 12x16 "Signs of Change" Season 12 Episode 16 Promo Trailer HD - When military grade technology is stolen, a deaf engineer, Sienna Marchione (Raquel McPeek Rodriguez), who always wanted to serve her country, and the only member of her team to survive the theft, helps Kensi and NCIS track down the tech before it’s taken out of the country, on NCIS: LOS ANGELES, Sunday, May 9th on CBS.