In 2013, Lockheed Martin announced the development of the next version of the SR-71 Blackbird spy plane. The SR-71 was…
In 2013, Lockheed Martin announced the development of the next version of the SR-71 Blackbird spy plane. The SR-71 was…
A super-fast jet called the Darkstar is believed to be being developed for the US military. Although this was considered…