Sen. Barbara Mikulski, D-Md., chairwoman of the Senate Appropriations Committee, opens a hearing on cybersecurity with Gen. Keith B. Alexander, director of the National Security Agency, as a primary witness, on Capitol Hill in Washington, Wednesday, June 12, 2013. (AP Photo/J. Scott Applewhite)

Associated Press
Sen. Barbara Mikulski, D-Md., chairwoman of the Senate Appropriations Committee, opens a hearing on cybersecurity with Gen. Keith B. Alexander, director of the National Security Agency, as a primary witness, on Capitol Hill in Washington, Wednesday, June 12, 2013.   (AP Photo/J. Scott Applewhite)
Sen. Barbara Mikulski, D-Md., chairwoman of the Senate Appropriations Committee, opens a hearing on cybersecurity with Gen. Keith B. Alexander, director of the National Security Agency, as a primary witness, on Capitol Hill in Washington, Wednesday, June 12, 2013. (AP Photo/J. Scott Applewhite)
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