After a surprise appearance by Edward Snowden at TED2014, Chris Anderson said: "If the NSA wants to respond, please do." And yes, they did. Appearing by video, NSA deputy director Richard Ledgett answers Anderson’s questions about the balance between security and protecting privacy.

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  • Episode Number 56
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  • Originally Aired Thursday, March 20, 2014
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  • Last Updated By puntoblu
  • Last Updated 08/07/2014 6:32pm