i can tell you this, i had issues getting a security clearance due to uh, my lacking of financial stability and me owning some collection agencies some money... That temporarly disqualified me from getting rated as a nuke, (right now i'm an ACEF reclassing as a nuke, probably today, i should check on that)... Just make sure your pretty squeaky clean... financialy and legally, and you should be golden...
That's my 2 cents.