**FILE** Gen. Keith B. Alexander, commander of the U.S. Cyber Command and director of the National Security Agency, testifies on Capitol Hill in Washington on June 12, 2013. (Associated Press)
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**FILE** Gen. Keith B. Alexander, commander of the U.S. Cyber Command and director of the National Security Agency, testifies on Capitol Hill in Washington on June 12, 2013. (Associated Press)
