1. What is a CNN?
2. ? the service has been made available to spy;Nick Hopkins;The UK Gathering Secret Intelligence via Covert NSA Operation,2013
3. The NSA's Giant Utah Data Center Will Probably Hold a Bunch of Spam;Brian Fung;Washington Post,2013
4. For NSA Chief, Terrorist Threat Drives Passion to 'Collect it All', Observers Say;Ellen Nakashima;Washington Post,2013