In No. 83-1075, we granted certiorari to decide whether § 102(d)(3) of the National Security Act of 1947, as incorporated in Exemption 3 of the Freedom of Information Act, exempts from disclosure only those sources of intelligence information to which the Central Intelligence Agency had to guarantee confidentiality in order to obtain the information. In No. 83-1249, the cross-petition, we granted certiorari to decide whether the Freedom of Information Act requires the Agency to disclose the institutional affiliations of persons whose identities are exempt from disclosure as "intelligence sources."