Photo shows that technological tests of carrier-bound X-47B drone were being conducted on the flight deck of USS Harry S. Truman nuclear-powered aircraft carrier on December 9, 2012 (US local time), according to the report by chinanews.com. It is reported that Truman aircraft carrier in the Nimitz-class is the first ship assigned in US Navy aircraft carriers for trials of unmanned combat air vehicle. (Photo Source: chinanews.com)