World’s fastest jet was made by this country, survived 4000 missiles, flew faster than a bullet, was used during…, not built by China, Russia, India, Israel, Turkey

The aircraft was made of titanium to survive the extreme heat caused by its speed. At full flight, the plane would heat up so much that its body expanded.
Image source: Lockheed Martin
The SR-71 Blackbird was not a regular aircraft—it was a Cold War marvel …