NCIS: Los Angeles (2009)

S04E12 Paper Soldiers

A grieving widow begins to question the events leading up to her Marine husband's final battle, prompting Sam and Callen to investigate potential cover-ups. At the same time, Hetty calls upon Operational Psychologist Nate Getz to serve as her "pawn," leaving the rest of the NCIS: LA team sensing that another evaluation is imminent.