All other information in the telephone calls database comes from mobile phones seized from any suspect during an arrest.
The database of the calls records is also maintained in the city of Hampton.
It is also said to contain the the contents of mobile devices seized during raids and arrests.
The US law requires a special warrant signed and approved by the Foreign Intelligence Surveillance Court (FISC).
Further there is a time limit for such kind of data to be saved.
This Snowdenesque revelations are going to have a deep impact in the general citizens of United States.
source: www.techworm.net
