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Senior Airman Nathan Krajcirik, 332nd Civil Engineer Squadron Emergency Management Section technician, takes a sample of an “unknown” powder during training Aug. 3, 2010, Joint Base Balad, Iraq. Different powders, pastes, liquids and aerosols are frequently used in training, so that during a real-world incident EM Airmen are able to put their training to use. Airman Krajcirik, a native of Lansford, Penn., is deployed from Langley Air Force Base, Va. (U.S. Air Force photo/Staff Sgt. Stacy Fowler)
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