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An X-47B Unmanned Combat Air System Demonstrator completes its first flight at Edwards Air Force Base, California, in this US Navy handout photo dated Feb 4, 2011. [Photo/Agencies] |
An X-47B Unmanned Combat Air System Demonstrator completes its first flight at Edwards Air Force Base, California, in this US Navy handout photo dated Feb 4, 2011. [Photo/Agencies] |
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