Ukrainian military has claimed the destruction of two small Russian patrol boats in the Black Sea. (May 2) AP
X-47B UCAS First Cruise Flight
Musical revue of the first "cruise" flight of the U.S. Navy's X-47B Unmanned Combat Air System demonstration aircraft. During this flight, conducted Sept. 30, 2011 flight, the aircraft's landing gear was raised and lowered for the first time, a key milestone in the envelope expansion phase of flight testing. The X-47B was designed, developed and produced by Northrop Grumman, the leader in unmanned systems.