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AF-1 (rear) and AF-2, F-35A Lightning II joint strike fighters, complete a test flight May 11, 2010, in preparation for the nonstop flight May 17 to Edwards Air Force Base, Calif., to begin extended flight test operations. Air Force test pilot Lt. Col. Hank Griffiths and Lockheed Martin chief test pilot Jon Beesley flew the jets nonstop in the first multi-ship, long-range F-35 flight. (Courtesy photo/David Drais)