The team investigates an arson attack on a naval defense contractor on NCIS: Los Angeles. "Let It Burn" is the eighth episode of the show's 14th season.
Rountree: And you. You're [Sam's] partner. Why aren't you training for this [triathlon]? Callen: I wish I could. I envy you guys. Unfortunately, I've got this thing. What's it called again. Oh, yeah. Common sense. Sam: And he's afraid of sharks.