This declassified Central Intelligence Agency document, dated February tenth, nineteen-sixty, is a codeword routing sheet concerning United States intelligence on the supply of Chinese Communist troops in Tibet by airlift. It offers a glimpse into C-I-A internal protocols for handling highly sensitive information. This record is available on documents two dot the black vault dot com. This document was released to the public under the Freedom of Information Act and declassified on July third, two thousand fifteen, by the A-A-R-O, or Assassination Records Review Board, acting as the declassification authority. The document is titled "Codeword Routing Sheet." It bears the approval for release stamp from the C-I-A. The sheet includes sections for approval information, with boxes for signature, action, direct reply, return, comment, preparation of reply, dispatch, concurrence, recommendation, and file. It also indicates "N-S-A Declassification/Release Instructions on File." Under "Remarks,"