2D
11. “The FBI, which was...”-- Author’s interview with a Senate Intelligence Committee staff member who requested anonymity.
12. “Snowden may have carried...”—Author’s interview with Tyler Drumheller.
13. “As Snowden acknowledged, he...”-- Bamford, Wired, op.cit.
14. “Absence of evidence is...” —Carl Sagan, Cosmos (Random House, New York) 1980. P. 49
15. “We have many notable cases...” For the cases of Robert Hanssen and Aldrich Ames, see Appendix A
16. “The greatest trick the...”—Author’s interview with Victor Cherkashin. The quote from Zhe Usual Suspects was adopted by the movie from Charles Baudelaire’s observation, “La plus belle des ruses du diable est de vous persuader qu'il n'existe pas.”
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