NCIS, Season 3

Gibbs:
You're coming along, strictly as an observer. Hand over all your weapons.

Ziva:
Is that really necessary? Alright.

[Gibbs just looks at her. Ziva removes her sidearm and gives it to him.]

Gibbs:
And your back-up.

Ziva:
What back-up?

Gibbs:
Left leg.

Ziva:
Oh. That one. [removes ankle holster]

Gibbs:
And the knife concealed at your waist. [Ziva removes the knife and hands it to him as well; Gibbs gives it back] You keep this. [quietly, in Ziva's ear] I just wanted you to know that I know.