we begin with nsa whistleblower thomas drake. >> my name is thomas drake. i joined the nsa as a senior executive responsible for electronic intelligence. 9/11 was my first day on the job. we were in this meeting and it was a rather dramatic moment, particularly when the second plane hit. i remember saying america is under attack. calling out to all the intelligence agencies. whatever you have, we need to put it out there. i was literally charged to be the leader at nsa to find all of these programs and filter through the data generated and provide intelligence on it, as it was being generated, while protecting the rights of americans. the prime directive at nsa was do not spy on the citizens. and then, as i discovered, to my horror, they were conducting blanket electronic surveillance with no controls, no accountability and oversight. nsa would have extraordinary penetration in terms of spying. i was so concerned. i remember telling my immediate supervisor, what are we doing? it was the most chilling conversation i have ever had. he told me it was all appro