A U.S. Airman assigned to the 435th Contingency Response Group tightens and grounds an electrical coil for a base build-up during exercise Agile Wolf 21-01 at U.S. Army Garrison Grafenwoehr, Bavaria, Nov. 16, 2020. Grounding the coil protects the electrical system from surges, safeguarding critical contingency operations infrastructure. Agile Wolf 21-01 is an exercise designed to sharpen the tactics, techniques and procedures for establishing expeditionary airfields on demand. (U.S. Air Force photo by Senior Airman Milton Hamilton)