For our military aviation fans, here's a beautiful piece of metal wall art. The Lockheed SR-71 "Blackbird" was a long-range, Mach 3+ strategic reconnaissance aircraft that was operated by the United States Air Force. The SR-71 Blackbird is still the fastest plane that has ever flown and served an important role in history as a spy plane. This 12" by 18" metal sign has eyelets for easy hanging.