What is the epi where they show Tony and Ziva talking in the begining about how Ziva came back from martial arts and needs help taking off her bandages?

Tony sees that Ziva's hands and feet are bandaged and covered in blood.)
Tony: I thought you said you were at Pilates.
Ziva: Well isn't that one of your martial arts?
Tony: No, it's kind of like expensive stretching.
Ziva: Well then I guess I wasn't doing a Pilates. Do you mind helping me with this? (indicating her bandages)
Tony: Yes I do mind. Who's blood is that?
Ziva: Not mine