From 173 to 173, A-10 Enhanced Wing Assemblies come to an end Lt. Col. Ryan Richardson, 514th Flight Test Squadron commander and A-10 test pilot, takes off during a functional check flight of an A-10 Thunderbolt II, tail no. 80-0252, at Hill Air Force Base, Utah, July 25, 2019. The aircraft was the last of 173 A-10s to receive new wings under the Enhanced Wing Assembly program to extend the flying service life of the fleet. (U.S. Air Force photo by Alex R. Lloyd) 2019.08.11