Training Turns into Dramatic Reality on 'NCIS: LA'

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On tonight's all-new episode of NCIS: Los Angeles, Callen (Chris O'Donnell), Sam (LL Cool J), Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen) go undercover as an elite tactical force to investigate an ambush tied to a cartel kingpin with terrorist connections.
In this sneak peek of "Kill House," we also discover that Sam's suggestion for the team to embrace an "open plan workspace" fall flat amid his call for "no more secrets, no more secret agendas and no more suspicions."
Check out the full episode of NCIS: Los Angeles tonight at 9 p.m. on CBS.