Message posted by FreebirdUK on January 24, 2017 at 6:08:35 PST:
I assumed that the redactions were made when the document was approved for release in 2002. If so why would the other A-12/M-21 vehicles have to be kept secret when their existence has been known for many years? Were there other vehicles used for some still secret program?
In Reply to: Re: Unknown Blackbird vehicle? Redaction from 1963 posted by AJSR71 on January 23, 2017 at 11:48:25 PST: