This is the sharp end of a Lockheed SR-71 Blackbird at March Air Field Museum. I was really shocked when I stood here and took this photograph by how small this aircraft really was. This aircraft was revolutionary and introduced a lot of new concepts including "Stealth" technology. It's first flight took place towards the end of 1964 and they were finally retired from service in 1998. If you have five minutes read the wiki page link about this aircraft, it was a feat of technology and introduced so many new ideas that are just accepted today as the norm.