Lockheed Blackbird Beyond the Secret Missions The Missing Chapters, is my last book about this remarkable series of ground-breaking aircraft. The new book consists of nearly forty-percent of additional content compared to its predecessor following the declassification of more documents. To create additional space, we decided to remove the detailed record of Detachment 1 missions and provide this additional content on the website. We’ve also included my attempt to record a similar document for Detachment 4 – this is an ongoing process and we’d welcome the input of others! Finally, we’ve included the individual aircraft flight log of those aircraft used by the test crews of Detachment 6, at Palmdale. I hope that both enthusiasts and future researchers will find this information interesting and of use.