Airman 1st Class Daniel Phelps, 779th Medical Group medical laboratory technician, prepares to perform a cross match on blood on Jan. 31, 2013, at Joint Base Andrews, Md. The transfusions are used to replace lost blood during a surgery and supplement for patients who are not able to properly produce their own blood. (U.S. Air Force photo/Airman 1st Class Erin O'Shea)(Released)
Airman 1st Class Erin O'Shea
Taken on 31 January 2013
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