SR-71: Liebesgrüsse aus Moskau

The titanium being manufactured in the United States in those days lacked the required purity. The only source of purer titanium available was located in the Soviet Union. So, according to the tour guide at the museum, the CIA set up dummy corporations in Europe and bought titanium from the Soviet Union.

Quelle: „The most remarkable airplane of the 20th century“ – (37signals)