Lt. Col. James Gresham, commander of the Arnold Engineering Development Complex 716th Test Squadron, left, discusses aerodynamic test capabilities of the 716TS with Secretary of the Air Force Frank Kendall 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)