I recently went through a similar background investigation for another agency, and I can tell you that they don't look at only a single aspect of a person's character; they look at the entire picture. I can tell you that I had at the time what was, to me, a large amount of debt and delinquencies and a couple other problems from the past. Despite all that, I still passed the investigation. The important thing to remember is you have to be completely honest with your investigator. All they want to know is if they can trust you. If you attempt to hide anything and they find out later, that will cause big problems. From what you said about your military experience and honorable discharge, you likely won't have very many problems as long as you are honest. As far as my own debt and delinquencies, I was just told to pay some of it down, presumably so that I would be less attractive to someone trying to convince me to give them information in exchange for paying off my debts.