Photos: UAVs land in the Smithsonian

The RQ-3A DarkStar never flew in combat--in fact, it hardly flew at all. The two prototypes built by Lockheed Martin and Boeing, under the auspices of the Defense Advanced Research Projects Agency, made a total of seven test flights in the second half of the 1990s, and one of those ended in a crash landing. With a wingspan of 69 feet, the Darkstar< /news:link> was designed to soar above 45,000 feet and at subsonic speeds on fully autonomous flights, on missions lasting more than eight hours.