CIA File of the Day
Comparison of SR-71 and A-12 Aircraft
A memorandum for the Committee on Imagery Requirements and Exploitation comparing the SR-71 and A-12 aircraft, to be discussed at a COMIREX meeting on 28 September. The NRO notes that, with respect to aircraft performance alone, there is little difference in range, but the A-12 will have an altitude advantage of from 2,000 to 5,000 feet over the SR-71 at the same Mach number because it is a lighter aircraft.
Courtesy of the CIA FOIA Electronic Reading Room. Official page: CIA FOIA Electronic Reading Room. Copy: Internet Archive.