Senior Airman Alan Hernandez, assigned to the 3rd Munitions Squadron, builds a GBU-32 on Joint Base Elmendorf-Richardson, Alaska, Oct. 2, 2019, while participating in exercise Polar Force 20-1. Polar Force 20-1 is designed to exercise multiple elements of the Agile Combat Employment concept of operations, which include generating fifth generation combat power from austere locations, command and control using nontraditional methods and rapid airlift capabilities to sustain a forward operating location. (U.S. Air Force photo by Justin Connaher)