During the Cold War, this plane could fly higher and faster than any other -- and 55 years after its first flight, it still does.
원문출처 : https://www.cnn.com/style/article/sr-71-blackbird-spy-plane-design/index.html
원문출처 : https://www.cnn.com/style/article/sr-71-blackbird-spy-plane-design/index.html