EDWARDS AIR FORCE BASE, Calif. (Feb. 4, 2011) An X-47B Unmanned Combat Air System Demonstrator completes its first flight at Edwards Air Force Base. The Unmanned Combat Air System Carrier Demonstration program will demonstrate the capability of an autonomous, low-observable unmanned aircraft to perform carrier launches and recoveries. (U.S. Navy photo Courtesy Northrop Grumman/Released)