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First Word: NSA chief defends surveillance as helping stop over 50 attacks

The House Permanent Select Committee on Intelligence is holding a hearing Tuesday on the government's recently disclosed surveillance programs. Last week,

NSA Director Gen. Keith Alexander testifies on Capitol Hill in Washington, Tuesday, June 18, 2013, before the House Intelligence Committee. (Photo by J. Scott Applewhite/AP)
NSA Director Gen. Keith Alexander testifies on Capitol Hill in Washington, Tuesday, June 18, 2013, before the House Intelligence Committee.AP

Clare Kim