![](http://www.alamy.com/thumbs/6/074CD1B6-F1F9-41EC-AE08-21BB1955D59A/PPB7GB.jpg)
Soldiers with Delta Company, 103rd Brigade Engineering Battalion, 56th Stryker Brigade Combat Team, 28th Infantry Division, Pennsylvania Army National Guard, endure a CS gas attack at the National Training Center, Fort Irwin, Calif. Aug. 17, putting their Chemical, Biological, Radiological, and Nuclear defense training to use during the early morning surprise attack.
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Photo credit: © Bob Collet / Alamy / Afripics
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