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n Afghanistan one survivor, the target himself, a terrorist, narrowly avoids the destruction of a building by a drone; one victim, however, is a discharged Marine, David, who was a gunnery sergeant in counterintelligence; Callen and company investigate. G and Sam talk with a representative from the Marine Corps, and Kensi and Deeks visit the parents; the father refuses to accept that his son returned to Afghanistan; Eric finds David's circuitous journey from Los Angeles to the Middle East; David's former employer and his girlfriend repeat two different cover stories from David; Eric and Nell find out for whom truly he recently started working; G and Sam visit the office of the new employer and get a warm welcome, then they take the one worker to the boatshed; Eric and Nell also visit the firm, where they learn about more recruits; the fearless foursome go to Dubai and beyond, where they take part in creative deception and work out everything; they safely head back home.

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