SR-71 Blackbird

The SR-71 Blackbird is one of the most remarkable and mysterious aircraft ever made. With a top speed over Mach 3, it was used as a high-speed aerial reconnaissance aircraft from 1964-1998. Much of the information we have today about the Blackbird was only recently declassified, with much still unknown about its development and operation. To read more about the Blackbird (and its predecessors, the YF-12 and A-12) visit this excellent Wikipedia article.