OXCART: The Real Secret of Area 51

Since the government has finally declassified the program, the people who worked at Area 51 can now talk about A-12 OXCART, a Wicked Secret program to build an test a Mach 3 spyplane at Nevada’s Groom Lake. You may know it as the forerunner of the SR-71 Blackbird. The LA Times talks to survivors of the program — via Boing Boing