McGarrett and Danno get all dressed up on the episode "Malama Ka Aina." It's the third episode in the show's history.
Looking sharp, McGarrett and Danno. The partners are nice and dressed up in this scene from "Malama Ka Aina."

Hawaii Five-0 Season 1 Episode 3 Quotes

Thick crust. Extra bullets, please.

Danny [after seeing the markings of a gun in a pizza box]

Danny: Okay. All right. What's that look?
Steve: What look?
Danny: The look. The look you give me when you don't tell me what you're thinking and the next think I know I'm getting shot at.