NCIS Season 8 Episode 20

(Tony and Barrett are in the elevator. No-one is talking. Tony hits the emergency stop.)
Tony: I'm telling ya. You mess with the great white, ya gonna get eaten.
Barrett: I'm not afraid of him.
Tony: That's your first mistake.
Barrett: Look, there's a pretty good chance I just caught the Port-to-Port Killer. Besides, Gibbs isn't exactly in Vance's good graces these days.
Tony: There's your second mistake.
Barrett: I get the feeling they're not on the best of terms, and Vance outranks him.
Tony: (Laughs) OK...I've seen a few directors come and go, and there's only been one Leroy Jethro Gibbs. Do the math.
Barrett: (Moving closer to DiNozzo) Yeah, and there's only one Anthony DiNozzo.
Tony: Actually, there are two.