A stealthy unmanned high-altitude, single-engined tactical reconnaissance aircraft proposed by Lockheed Martin would require 10 years and cost approximately $3.8 billion to develop, the company concedes.

Graphic: Lockheed Martin
Continue reading “Lockheed Martin’s TR-X high-altitude UAV needs 10 years and $3.8 billion to develop”


![2923734_original[1]](http://alert5.com/wp-content/uploads/2016/03/2923734_original1-500x281.jpg)