U.S. Air Force Staff Sgt. Caleb uses a computer program to identify network issues during his unit’s training period at Berry Field Air National Guard Base, Nashville, Tennessee, on May 5, 2019. Caleb’s unit was training in advanced network systems and resolving network issues. (U.S. Air National Guard / Tech. Sgt. Mark Thompson)
One Air Force airman directs the pilot of an F-35 Lighting II while another places chocks around the aircraft’s wheel at Nellis Air Force Base, Nevada, on March 6, 2013. (U.S. Air Force / Lawrence Crespo)