The Multi-Use Technology Testbed, a.k.a. Mutt, is a small, unmanned aircraft developed by the Air Force Research Lab to test technologies for use in new kinds of lightweight, flexible aircraft. It's one of the Air Force's so-called X planes, this one designated the X-56A. The 7.5-foot-long aircraft has a 28-foot wingspan and is being built by Lockheed Martin.
Image credit: Air Force Research Lab/Lockheed Martin