A U.S. Army National Guard Chemical Operations Specialist assigned to the 108th Chemical Company, S.C Army National Guard in North Charleston, S.C., checks Risden Altman for radiation during a mock mass decontamination operation in support of exercise Ardent Sentry, May 18, 2013, a major North American Aerospace Defense Command and United States Northern Command training exercise May 17-21, 2013. It involves a scenario of a hurricane striking the South Carolina coast, requiring more than 1,500 members of the S.C. National Guard to practice disaster response activities and coordination procedu

- Image ID: HF19D8

A U.S. Army National Guard Chemical Operations Specialist assigned to the 108th Chemical Company, S.C Army National Guard in North Charleston, S.C., checks Risden Altman for radiation during a mock mass decontamination operation in support of exercise Ardent Sentry, May 18, 2013, a major North American Aerospace Defense Command and United States Northern Command training exercise May 17-21, 2013. It involves a scenario of a hurricane striking the South Carolina coast, requiring more than 1,500 members of the S.C. National Guard to practice disaster response activities and coordination procedu

PJF Military Collection / Alamy Stock Photo

Image ID: HF19D8

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