U.S. Marine Corps photo by Sgt. Mark Fayloga/Released 091202-M-1558F-011.jpg
Dec 2, 2009
Using a blowtorch, Sgt. William W. Patnode, Headquarters Battalion, Chemical Biological Radiological Nuclear chief, activates o-Chlorobenzylidene Malononitrile gas, more commonly known as CS gas, during a Field Protective Mask Confidence Exercise using the newly issued M50 Joint Service General Purpose gas masks at the base gas chamber Dec. 2.
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