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            AIR FORCE PHOTOS
   140326-F-QZ836-247
                Dr. David Walker, deputy assistant secretary of the Air Force for science, technology and engineering, testifies on science and technology programs in the changing security environment before the House Armed Services Committee’s subcommittee on Intelligence, Emerging Threat and Capabilities, in Washington D.C., March 26, 2014. (U.S. Air Force photo/ Staff Sgt. Carlin Leslie)

                PHOTO BY:
                        Staff Sgt. Carlin Leslie
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