The National Security Agency is a lot of things. Transparent is not one of them.
On Friday, an appeals court turned down a Freedom of Information Act (FOIA) request for details about the NSA's working relationship with Google. Per The Associated Press, the ruling reads in part: "If NSA disclosed whether there are (or are not) records of a partnership or communications between Google and NSA regarding Google’s security, that disclosure might reveal whether NSA investigated the threat, deemed the threat a concern to the security of U.S. Government information systems, or took any measures in response to the threat. As such, any information pertaining to the relationship between Google and NSA would reveal protected information about NSA’s implementation of its Information Assurance mission."