Smoke from heavy shelling rises above buildings in Dara'a, Syria, on Aug. 28. Ugarit News/AP hide caption

itoggle caption Ugarit News/AP

The National Security Agency says its massive new data center near Salt Lake City will enhance the agency's ability to analyze the email, text message, cellphone and landline metadata it collects. Rick Bowmer/AP hide caption

itoggle caption Rick Bowmer/AP

Boston Police Commissioner Edward Davis talks with reporters during the hunt for the Boston Marathon bombers in April. Michael Reynolds /EPA/Landov hide caption

itoggle caption Michael Reynolds /EPA/Landov