Air Force Photos

Paul Hattendorf, a Lockheed Martin test pilot, flies AF-2, the second production F-35 Lightning II for the Air Force, during an airframe loads envelope expansion mission June 11, 2014, over Edwards Air Force Base, Calif. During the test mission, AF-2 became the first F-35 to reach 1,000 flight hours. (Lockheed Martin photo/Tom Reynolds)

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Photo by: Tom Reynolds |  VIRIN: 140611-F-TW412-001.JPG