Sam and Callen find a submarine being used to transport drugs.

Callen looks inside the sub, while Sam covers him.

Sam and Callen on the dock during the Season 5 finale, "Deep Trouble."

Sam, Callen, Deeks and Kensi walk down the stairs in a line.

Nell approaches Sam and Callen with information about the investigation.

The NCIS: Los Angeles team takes to the air in this photo. It's from the episode "Iron Curtain Rising."

Callen pulls off the construction worker looks pretty well, doesn't he? This is a photo from "Merry Evasion."

Hanna and Deeks work together while investigation the death of a federal agent on NCIS: Los Angeles. "Allegiance" is the 13th episode of the show's fifth season.

The team comes together to investigate the murder of two private military contractors on NCIS: Los Angeles. "War Cries" is the 14th episode of the show's fifth season.

The mysterious box that Kensi had on her desk reappears a few weeks later on Deeks' desk. What's in it? We'll have to wait to find out. Deeks has it, but hasn't opened it yet.

Deeks didn't come out and declare his love for Kensi, but this was the conversation that changed everything for these partners. Snyder's death allowed their hearts to open just a little. "You smell like sunshine and gun powder. Two of my favorite things."

Sam Hanna, played by LL Cool J, will be headlining the NCIS spin-off in the fall of 2009. He's a former Navy SEAL.