Marines assigned to the 15th Marine Expeditionary Unit fit their M50 gas masks during chemical, biological, radiological, and nuclear defense training at Marine Corps Base Camp Pendleton, California, Sept. 23, 2022. The purpose of CBRN defense training is to educate Marines and Sailors on CBRN effects, maintain proficiency in personal survivability measures, and build confidence in personal protective equipment.

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Keywords: 15th, annual, camp, chamber, gas, mef, meu, pendleton, readiness, training