Lockheed YF-12A > National Museum of the United States Air Force™ > Display
The YF-12 was developed in the 1960s as a high-altitude, Mach 3 interceptor to defend against supersonic bombers. Based on the A-12 reconnaissance aircraft, the YF-12A became the forerunner of the
Boeing X-32A > National Museum of the United States Air Force™ > Display
![](https://www.nasa.gov/wp-content/uploads/2023/03/362413main_EC74-4111_full.jpg?w=640)
YF-12 Blackbird - NASA
North American XB-70 Valkyrie > National Museum of the United States Air Force™ > Display
![](https://image.isu.pub/150315154425-0e98459b6989fce20e92a302f40d20a5/jpg/page_1_thumb_large.jpg)
The Aviation Magazine April-May 2015 Volume 6, Issue 3 by The
![](https://i.ytimg.com/vi/dvXcUJA-QvQ/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLCM_2DBsx9WHPQXwNrcCpQLyOkPSg)
Detailed tour around the Lockheed YF-12! The fighter version of the SR-71 Blackbird.
North American XB-70 Valkyrie > National Museum of the United States Air Force™ > Display
Lockheed Martin F-22A Raptor > National Museum of the United
Lockheed YF-12A > National Museum of the United States Air Force™ > Display
Lockheed YF-12A > National Museum of the United States Air Force™ > Display