Maj. Derek Kirkwood, an F-35 Test Pilot assigned to the 461st Flight Test Squadron, completes pre-flight checks during Orange Flag 21-3 at Edwards Air Force Base, Calif., Oct. 26, 2021. This iteration of Orange Flag included Test Flag Enterprise collaboration between Eglin Air Force Base’s Emerald Flag in Florida, and Air Combat Command’s 53rd Wing’s Black Flag Large Force Test Event, conducted out of Nellis Air Force Base, Nev. (U.S. Air Force photo by Staff Sgt. Tabatha Arellano)
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