U.S. Air Force Staff Sgt. Caleb Gibson, left, and Staff Sgt. Erick Bartels use patient simulator devices to check Propaq Encore monitors at Joint Base Andrews, Md., Aug. 15, 2012. The Airmen were biomedical equipment technicians assigned to the Medical Logistics Flight of the 779th Medical Support Squadron.
U.S. Air Force photo by Val Gempis
Taken on 14 August 2012
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