It might seem nationalistic to some but it reminds me of a quote from "A Few Good Men" -
Son, we live in a world that has walls, and those walls have to be guarded by men with guns. Who's gonna do it? You? You, Lt. Weinburg? I have a greater responsibility than you could possibly fathom. You weep for Santiago, and you curse the Marines. You have that luxury. You have the luxury of not knowing what I know. That Santiago's death, while tragic, probably saved lives. And my existence, while grotesque and incomprehensible to you, saves lives.