And when we got the personnel records, typically, we would have hidden these, shared them with a few intelligence agencies, and then try to operate with them.

That's why I began investigating the most secretive and experimental prison units in the United States, for so-called "second-tier" terrorists.

But do you see any irony in the fact that, in order for you to shine that light, you have to, yourself, create secrecy around your sources?