A fascinating article on how Edward Snowden Taught Me To Smuggle Secrets Past Incredible Danger:
On May 13, after creating a customized version of Tails for Greenwald, I hopped on my bike and pedaled to the FedEx office on Shattuck Avenue in Berkeley, where I slipped the Tails thumb drive into a shipping package, filled out a customs form that asked about the contents (“Flash Drive Gift,” I wrote), and sent it to Greenwald in Brazil. He received the package two weeks later, it having been delayed in transit, for what I believed to be bureaucratic rather than nefarious reasons, and the blue thumb drive actually made a cameo appearance in “Citizenfour.” For a technologist, this was a dream come true.