A report from the American magazine Aviation Week stated regarding the prototype: “In the early hours of July, an ‘unmanned subscale aircraft’ was seen flying into the Air Force’s Plant 42 in Palmdale, California, where Lockheed Martin’s legendary Skunk Works division is headquartered.” According to the American magazine, visitors to the SAE International Aerotech Congress and Exhibition at Fort Worth, Texas, were able to observe the SR-72 prototype. The sensitivity of the military program means that details regarding the SR-72’s development and the specifications of the design are not readily available.