Maj. Gen. Catherine Chilton (right), Air Force Materiel Command Air, Space and Information Operations (AFMC/A3) director, discusses the operation of the Propulsion Wind Tunnel Wings Level Yaw apparatus with Arnold Engineering Development Complex Senior Acquisition Program Manager Elijah Minter (left) during a tour of the Complex on March 18. The WLY provides quality data and an increased yaw range capability during aerodynamic testing. Dr. Eileen Bjorkman, a member of the Senior Executive Service and AFMC/A3 deputy, is also pictured attending the tour. (U.S. Air Force photo/Rick Goodfriend)