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Kellye Burns, left, a space test engineer, shows Secretary of the Air Force Barbara Barrett some of the hardware and samples used during a materials test in teh Space Threat Assessment Testbed at Arnold Air Force Base, Tenn., June 18, 2020. Also pictured is John Claybrook, capability manager for Space Asset Resilience. (U.S. Air Force photo by Jill Pickett)

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Photo by: Jill Pickett |  VIRIN: 200618-F-KN521-0029.JPG