Actually I don't think you can prove he was higher ranking one way or another. It would appear, based on the wide variety of documents he stole, that they were

Actually I don't think you can prove he was higher ranking one way or another. It would appear, based on the wide variety of documents he stole, that they were in fact hacked – with Snowden abusing his privileges on NSA computers. No single person would have access to that much compartmentalized information without being at NSA HQ.