Kim Zetter at Salon.com reports: "In a pivotal network operations center in metropolitan St. Louis, AT&T has maintained a secret, highly secured room since 2002 where government work is being conducted, according to two former AT&T workers once employed at the center.... The former workers say company supervisors told them that employees working inside the room were 'monitoring network traffic' and that the room was being used by 'a government agency.'"