U.S. Air Force Tech. Sgt. Nathan Cox, left, 52nd Maintenance Group quality assurance inspector, examines the testing progress made on an F-16 Fighting Falcon at Spangdahlem Air Base, Germany, March 25, 2019. Cox was responsible for overseeing the two teams who were performing the Combat Shield tests. (U.S. Air Force photo by Airman 1st Class Kyle Cope)