Secretary of the Air Force Frank Kendall, right, is greeted by Maj. Kristofer Dahl with the Arnold Engineering Development Complex 716th Test Squadron during Kendall’s Oct. 4, 2023, visit to Arnold Air Force Base, Tenn. During his time at Arnold, headquarters of AEDC, Kendall observed some base operations, toured several facilities and received overviews of current and planned AEDC test capabilities. (U.S. Air Force photo by Keith Thornburgh)