Message posted by ajsr71 on January 23, 2017 at 11:02:36 PST:
They weren't carried by the A-12, Two M-21's were built on the A-12 production line under a separate contract along with 3 more A-12's. At the time of the document the TAGBOARD Program was being transferred to the USAF and they were trying to sort out the Responsibilities /manpower and who's going to pay the budget. As TAGBOARD Drone as listed as a separate item it could have been anything not necessarily carried by a Mother craft..
In Reply to: Re: Unknown Blackbird vehicle? Redaction from 1963 posted by FreebirdUK on January 23, 2017 at 9:15:29 PST: