betty's chin dropped like that. [laughter] >> i was absolutely stunned. [laughter] >> medsgernt years tracking down the other burglars and getting them to reveal the secret they had vowed to keep forever, the mastermind, william davodon, recently died, but he and four others are identified in medsger's book, "the burglary," and in a new documentary directed by joanna hamilton. >> we didn't notice the seemingly small event that had far reaching consequences. >> the exposure pushed congress to rein in government surveillance. it created a special court, the so-called fisa court, to issue warrants when intelligence agencies want to spy on u.s. citizens. but after 9/11, more wide-ranging surveillance was allowed. just how much the nsa's spying activities had grown was large will i unknown -- largely unknown until 2013 when contractor edward snowden leaked classified documents. [applause] >> the public has to decide whether these programs or policies are right or wrong. >> the u.s. government reportedly attaining top secret court orders requiring verizon to turn over the telephone