(b)(5) EXEMPTION 5 Privileged Interagency
or Intra-Agency Memoranda or Letters. This exemption protects "inter-agency
or intra-agency memorandums of letters which would not be available by
law to a party ...in litigation with the agency." As such, it has been
construed to "exempt those documents, and only those documents, normally
privileged in the civil discovery context."