Senior Airman Brett Simmons, 22nd Logistics Readiness Squadron supply journeyman, checks his M50 gas mask for a proper fit during Chemical, Biological, Radiological and Nuclear Survival Skills Training Oct. 3, 2017, at McConnell Air Force Base, Kansas. During the training, Airmen learned protective actions before, during and after an attack, contamination avoidance procedures and how to wear protective gear correctly.

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Keywords: 22d, air, america, archive, armed, army, arw, cbrn, chemical, defence, force, forces, gas, mask, military, navy, reportage, service, serviceman, servicemen, soldier, sst, states, training, united, usa