U.S. Air Force Tech. Sgt. Joshua Martin, 20th Maintenance Group maintenance quality assurance (QA) technician, walks along the flightline at Shaw Air Force Base, S.C., Aug. 1, 2017. Airmen assigned to QA are tasked with inspecting the work of all maintenance career fields, ensuring Airmen are performing tasks correctly and proficiently. (U.S. Air Force photo by Senior Airman Christopher Maldonado)