The unmanned aerial system (UAS) could pack a 400-pound payload of four Hellfire missiles, and also deliver weapons or other supplies to warfighters deep in rough territory. Its design allows it to have a maximum speed of 460 mph, but also have the ability to loiter overhead at just 115 mph.
http://www.popsci.com/military-aviation-amp-space/article/2009-07/unmanned-hover-aircraft-takes-first-flight (where you can find a video of a 1/2 scale version in flight)