Bones, Season 1

[Booth and Brennan arrive at a shaft to confront a suspect, who is unaware that they are nearby.]

Booth:
Guy was a Navy SEAL.

Brennan:
So? You were a Guide.

Booth:
A Ranger. I was a Ranger, Bones, ok? I was not a Guide. Guides, they show you waterfalls, they sell you cookies. Was a Ranger.

Brennan:
What's he doing at the shaft?

[Brennan goes towards the suspect, Booth holds her back]

Brennan:
Are Rangers afraid of SEALs?

Booth:
What? C'mon Bones. No, Rangers aren't afraid of anybody. SEALs are pretty good though.