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Col. Susan Pietrykowski, 28th Medical Group commander, performs deep breathing during a gas mask fit test as Airman 1st Class Zachary Piper, 28th Medical Operations Squadron bioenvironmental engineering technician, evaluates the amount of oxygen that is maintained in the mask at Ellsworth Air Force Base, S.D., July 1, 2013. The fit test uses two hoses, one connected to the drinking hose to the interior of the mask and the other used to measure the ambient air on the outside, allowing a technician to assesses how many particles of oxygen are retained in the mask. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)


Ramping up for the ORE

Col. Susan Pietrykowski, 28th Medical Group commander, performs deep breathing during a gas mask fit test as Airman 1st Class Zachary Piper, 28th Medical Operations Squadron bioenvironmental engineering technician, evaluates the amount of oxygen that is maintained in the mask at Ellsworth Air Force Base, S.D., July 1, 2013. The fit test uses two hoses, one connected to the drinking hose to the interior of the mask and the other used to measure the ambient air on the outside, allowing a technician to assesses how many particles of oxygen are retained in the mask. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)

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