The United States sourced titanium for the Lockheed SR-71 Blackbird reconnaissance aircraft from the Soviet Union via CIA front companies. The U.S. built the SR-71 Blackbird to spy on the Soviet Union. Lockheed Martin says titanium alloy was the only material option for the SR-71 airframe — providing the strength of stainless steel, relatively light weight, and durability at excessive temperatures.
SR-71 Blackbird: The Flying Battleship SR-71 B…