In the 1960s, Lockheed engineer Kelly Johnson was given an almost impossible task by the U.S. Air Force and CIA. He needed to ...

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 ...

Lockheed developed a spy drone in the 1960s that crashed in China. China recently debuted a supersonic drone that bears a striking resemblance to Lockheed's D-21. The D-21's urgent development was ...

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 ...