A local terrorist attack will leave Sam Hanna shaken in a new NCIS: Los Angeles sneak peek.

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The former Navy SEAL has been having a rough few episodes, considering anything involving children tends to hit close to home for the team's only father. Sam (LL Cool J) let his emotions run the show during "One More Chance," and it looks like fear for his little girl will keep him moving during "Exposure."

Not that the Special Operations agent will let his emotions compromise his work. When an explosion rocks a military charity event that Sam and his family could have been attending, Callen's (Chris O'Donnell) partner will be quick to determine what caused the explosion, even as he holds a young victim's shoe in his hands (see video below).

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After a ZNN reporter claims to know which terrorist group is behind the destructive attack, Hetty's (Linda Hunt) team must track them down before they can strike again. NCIS's regular field agent's will get a little help from Nell (Renee Felice Smith) as she reenter the field along side Assistant Director Granger (Miguel Ferrer) as the case intensifies.

Click here to see photos of the upcoming episode.

NCIS: LA airs Tuesdays at 9 p.m. ET on CBS.