As the USA Today reports: "The NSA program reaches into homes and businesses across the nation by amassing information about the calls of ordinary Americans—most of whom aren't suspected of any crime....the spy agency is using the data to analyze calling patterns in an effort to detect terrorist activity, sources said in separate interviews....'It's the largest database ever assembled in the world,' said one person, who, like the others who agreed to talk about the NSA's activities, declined to be identified by name or affiliation. The agency's goal is 'to create a database of every call ever made' within the nation's borders, this person added."