U.S. Airmen with the 156th Logistics Readiness Squadron, Puerto Rico Air National Guard, equip gas masks during a chemical, biological, radiological, and nuclear training at Muñiz Air National Guard Base, Carolina, Puerto Rico, March 12, 2025. This defense survival course gave participants the skills and knowledge necessary to properly utilize CBRN equipment and decontamination procedures. (U.S. Air National Guard photo by Senior Airman Marrissa L. Rodriguez)
