The AQM-60 Kingfisher, originally designated XQ-5, was a target drone version of the USAF's X-7 test aircraft built by the Lockheed Corporation. The aircraft was designed by Kelly Johnson, the designer who later went on to create the Lockheed SR-71 Blackbird and its relatives, such as the Lockheed A-12 and Lockheed YF-12.[1]