U.S. Air Force Airmen assigned to the 316th Civil Engineering Squadron, practiced chemical, biological, radiological, and nuclear defense skills during a combat readiness exercise at Joint Base Andrews, Md., March 13, 2025. Mission Oriented Protective Posture gear protect military member against airborne pollutants during a CBRN attack (U.S. Air Force photo by Airman 1st Class Patrick Njuguna)