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X-47B - the future of autonomous aerial warfare (0:53) 

Feb 11 - The U.S. Navy says it has successfully tested its latest weapon in aerial warfare, the X-47B unmanned aircraft. The X-47B has been designed for use at sea as a carrier-based plane, but its first ever test-flight took place in the skies over Edwards Air force base in California. Tara Cleary reports. ( Transcript )

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