Lt. Gen. Warren D. Berry, Air Force deputy chief of staff for Logistics, Engineering and Force Protection, examines aircraft components produced in-house by some of Luke Air Force Base’s tenant units, Oct. 4, 2018, in Ariz. Berry’s visit laid out plans for the evaluation of several F-35 Lightning II maintenance programs which may enhance productivity and maintenance efficiency Air Force-wide. (U.S. Air Force photo by Senior Airman Ridge Shan)