Please Note: These historical documents are PDF images of formerly classified carbon paper and reports that have been declassified. Due to the age and poor quality of some of the PDF images, a screen reader may not be able to process the images into word documents. In accordance with Section 504 of the Rehabilitation Act of 1973, as amended, individuals may request that the government provide auxiliary aids or services to ensure effective communication of the substance of the documents. For such requests, please contact the Freedom of Information Act Office at foianet@nsa.gov or Public Affairs Office at 443-634-0721.