blackwater

Say that you work for a private security company (PSC) and most people think one of two things: Either you are a mall cop. Or you work for Blackwater, the infamous private security firm, and you go around shooting people.

mer·ce·nary 

noun \mr-s-ner-ē, -ne-rē\

: a soldier who is paid by a foreign country to fight in its army : a soldier who will fight for any group or country that hires him (Merriam-Webster)