National Air and Space Museum, Washington D.C. The Steven F. Udvar-Hazy Center, part of the National Air and Space Museum, is home to one of the few remaining SR-71 Blackbirds, the fastest air-breathing manned aircraft ever made. (Fabulous photo is by Journey Photographic)
A-12 Oxcarts, originally built for the CIA with USAF markings. The Oxcart was a single seat aircraft while its future USAF SR-71 Blackbird variant was a dual seat aircraft. Note the additional canopy on the second A-12 in the photograph.