Russell Tice, an NSA intelligence officer, was fired from his job in May of last year for speaking out against the Bush administration's illegal abuses of power in spying on Americans. Read his interview with Alternet here.

Well, as far as an intelligence officer, especially a SIGINT officer at N.S.A., we're taught from very early on in our careers that you just do not do this. This is probably the number one commandment of the SIGINT Ten Commandments -- you will not spy on Americans.

It is drilled into our head over and over and over again in security briefings, at least twice a year, where you ultimately have to sign a paper that says you have gotten the briefing. Everyone at N.S.A. who's a SIGINT officer knows that you do not do this. Ultimately, so do the leaders of N.S.A., and apparently the leaders of N.S.A. have decided that they were just going to go against the tenets of something that's a gospel to a SIGINT officer.