(To Nate as he leaves) Keep you wits sharp, your heart open and your gun loaded.

Callen: Is there a military angle to any of this?
Hetty: No, but Detective Deeks is still the Liaison Officer with the LAPD, which makes him about as close to one of us as it gets.

Hetty: Second unrelated question, do you have plans for this weekend?
Nate: Plans?
Hetty: Plans.
Nate: Uh, are you asking me out? No, that'd be weird. No, no plans.

Hetty: Mr. Callen, I don't take kindly to being tailed.
Callen: I'm more of a wingman than a tailman.

Hetty: Then that's what you should do, stay out of their way and find Mr. Deeks.
Callen: Their not going to like it if they catch us.
Hetty: Then don't get caught.

(Hetty approaches Callen as he is sleeping, he wakes up staring at Hetty)
Hetty: Did you catch him this time? You were twitching like a sleeping dog.
Callen: Well, you now what they say about sleeping dogs. (looks at Hetty)