Staff Sgt. Elvin Esguerra, 593rd Special Troops Battalion Chemical, Biological, Radiological and Nuclear non-commissioned officer, gets the thumbs-up from a group of soldiers as they prepare to enter the CS chamber on Joint Base Lewis-McChord, Wash. During the Chemical, Biological, Radiological, Nuclear training exercise hosted by the 593rd Sustainment Brigade, soldiers became familiarized with their protective masks and the effects of orto-chlorobenzylidene-malononitrile, commonly referred to as CS gas.
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JOINT BASE LEWIS-MCCHORD, WA, US
This work, 593rd revisits the gas chamber [Image 1 of 6], by SSG David Chapman, identified by DVIDS, is free of known copyright restrictions under U.S. copyright law.