You aren't the only one here claiming to know what they are talking about this matter. It matters how it is done, which is a point well covered in Ari's post.

There are at least two people on FT who were at the European and Asian torture centers upon which the CIA relied during recent years and more than that number who were present at GTMO for secret hearings. Is that a "real" clearance? At least one of them went to the press on such matters and there is no reason to believe that person's employment relationship has been surrendered even as there is every reason to be aware that the person still has a "real" clearance. What matters is how it is done.