A high-speed reconnaissance aircraft has disappeared from a US military facility in California. A specific SR-71 Blackbird is missing from the air base, and officials have not provided an explanation for the aircraft's absence as a mystery grows around its current location.

The disappearance follows a recent teaser from the head of NASA, who shared an image of a new X-plane that closely resembled the Blackbird. The agency has not clarified whether the experimental project is linked to the missing spy plane.