Not just the mundane business type ethics. As I'm nearing my B.S. in Mech/Aero engineering I have become very aware that its entierly possible I will be working in a defense type job building/fixing/improving war time machines. It really hit me when I recently went for an interview for a federal job in a section titled "lethality analysis". Has anyone out there also struggled with personal ethical issues arising from building things whose sole purpose is, shall we say, "counter-productive"?