Exhaustive nearly to the point of exhausting. The middle third was repetitive and tough to stick with. Others have noted issues with timelines and I agree – it might have been more clear to have the book told in chronological order. I found myself stopping several times to try to pin down the chronology.
HOWEVER it was also eye-opening, in-depth, fascinating and enlightening. A pretty scathing assessment of the NSA as well. And I think “that fucking salmon” will work its’ way into my vocabulary permanently.