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Hetty is placed under investigation and representatives from the Department of Justice is sent to investigate the team on NCIS: Los Angeles.
Callen and Sam are trapped in an armed submarine aimed at San Diego like a missle.
NCIS works with DEA to find a submarine transporting cocaine from Colombia to United States.
An explosion at a military sponsored charity event leads the team to investigate when a news reporter claims to know the group responsible on NCIS: Los Angeles.
Sam believes that theft of a software for a new unmanned aerial vehicle is tied to the kidnapping of an engineer's daughter.
Kensi returns to the field on "Three Hearts," which airs Tuesday, April 15, 2014 on CBS.
NCIS investigates a former marine being targeted by Al Queda for embezzling money in Iraq.
The NCIS: LA team heads to Aghanistan to search for Kensi.
The NCIS LA team has to find out if Russian missile control has been compromised.
The team searches for a mole after an undercover agent is killed by a local gang.