Update: this is a joke. Cpt Hill never said any of this. It was lifted from Col Jessep's monologue in the film A Few Good Men. It would be an appropriate response to Rick Santorum's answer to Cpt Hill's question, but it is entirely fictional. I'd thought it would be obvious, but it seems that quoting a movie that's almost 20 years old gets lost. I apologize to anyone who earnestly believed these to be Cpt Hill's words.
Stephen Hill's reply to Rick Santorum really ought to be:
Senator, we live a world that has walls, and those walls have to be guarded by men with guns. Who's gonna do it, you? You, Senator Santorum?