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Secretary of the Air Force Barbara Barrett looks at a model of an F-18 Super Hornet in the Arnold Engineering Development Complex 16-foot Transonic Wind Tunnel during her visit, June 18, 2020, to Arnold Air Force Base, Tenn. Also pictured is Dr. Rich Roberts, flight commander for store separation. (U.S. Air Force photo by Jill Pickett)

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Photo by: Jill Pickett |  VIRIN: 200618-F-KN521-0098.JPG