Even more Top Secret than the Lockheed SR-71, the D-21 drone was a promising Cold War idea that could have eliminated the need for manned overflights, although it was mostly unsuccessful. After the ...

In the 1960s, Lockheed engineer Kelly Johnson was given an almost impossible task by the U.S. Air Force and CIA. He needed to create a spy drone with range, speed, and altitude capabilities that could ...

In 1964, Lockheed launched one of the most ambitious secret projects in aviation history: the D-21 drone. Designed to fly faster than Mach 3, it aimed to capture vital intelligence over hostile ...

The Lockheed D-21 Was More Than a Mini-Version of the SR-71 Blackbird – The concept of “military drone” is one that is often associated with the 21st century, but actually ...

"Featuring more than 100 never-before-published photos, including recently declassified images from the CIA"--Cover. SR-71 Blackbird (Jet reconnaissance plane) SR-71 Blackbird (Jet reconnaissance ...