Senior Airman Alan Hernandez, a native of Houston, Texas, assigned to the 3rd Munitions Squadron, builds a GBU-32 (Guided Bomb Unit) on Joint Base Elmendorf-Richardson, Alaska, Oct. 2, 2019, while participating in the Polar Force 20-1 exercise. Polar Force 20-1 is designed to exercise multiple elements of the Agile Combat Employment (ACE) concept of operations, which include generating 5th Generation combat power from austere locations, command and control using non-traditional methods, and rapid airlift capabilities to sustain a forward operating location. The ACE concept enables 3rd Wing to deliver lethal Airpower for America, even in a contested environment. (U.S. Air Force photo/Justin Connaher). Original public domain image from Flickr