U.S. Air Force Airman from Team Fairchild tightens the draw string fastening on their Mission Oriented Protective Posture equipment during a large readiness exercise at Fairchild Air Force Base, Washington, Oct. 7, 2021. The scenario required Airmen to properly don their gear during a chemical, biological, radiological and nuclear attack scenario. (U.S. Air Force photo by Senior Airman Ryan Gomez)