FILE - In this June 12, 2013 file photo, Gen. Keith B. Alexander, commander, U.S. Cyber Command and director, National Security Agency/Chief, Central Security Service testifies on Capit

 

              FILE - In this June 12, 2013 file photo, Gen. Keith B. Alexander, commander, U.S. Cyber Command and director, National Security Agency/Chief, Central Security Service testifies on Capit
FILE - In this June 12, 2013 file photo, Gen. Keith B. Alexander, commander, U.S. Cyber Command and director, National Security Agency/Chief, Central Security Service testifies on Capitol Hill in Washington. Wondering what the U.S. government might know about your phone calls and online life? And whether all of this really helps find terrorists? Good luck finding solid answers. Americans trying to wrap their minds around two giant surveillance programs are confronted with a mishmash of leaks, changing claims and secrecy. Congress members complain their constituents are baffled _ and many lawmakers admit they are, too. (AP Photo/J. Scott Applewhite, File)