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Dr. Rich Roberts, chief of the Aerodynamics Branch Store Separation Section of Arnold Engineering Development Complex, looks at a directed energy (DE) system turret positioned on a sting in the 4-foot transonic wind tunnel at Arnold Air Force Base, Tenn., March 5, 2021. The branch plans to expand DE wind tunnel testing capabilities later this year with the addition of the Integrated Directed Energy Aero-Optical Surrogate, which is a subscale model of an F-15 aircraft with the ability to test laser pods. (U.S. Air Force photo by Jill Pickett)
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