Soldiers from Headquarters and Headquarters Company, 301st Maneuver Enhancement Brigade, prepare to enter a mask confidence chamber as preparation for a response to a Chemical, Biological, Radiological or Nuclear (CBRN) attack, at Joint Base Lewis-McChord, Washington, January 21st, 2017. The purpose of the training was to familiarize soldiers with the M50 Joint Service General Purpose Mask, and to ensure that they are prepared to respond to a CBRN incident or attack

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Photo credit: © Chuck Little / Alamy / Afripics
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Keywords: air, america, archive, armed, army, defence, force, forces, military, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa