NSA expert James Bamford on Building America’s secret surveillance state.” He is the author of The Shadow Factory: The NSA from 9/11 to the Eavesdropping on America; Body of Secrets: Anatomy of the Ultra-Secret National Security Agency; The Puzzle Palace: Inside the National Security Agency, America’s Most Secret Intelligence Organization; and A Pretext for War: 9/11, Iraq, and the Abuse of America’s Intelligence Agencies.