From patients to wounded warriors, blood is vital
Tech. Sgt. Tarissa Brown, 403rd Aerospace Staging Squadron lab technician, checks iron levels of Susan Gardner, 334th Training Squadron commander support staff, prior to her donating blood March 6, 2015, at the blood donor center, Keesler Air Force Base, Miss. Gardner tries to donate blood every 56 days. (U.S. Air Force photo by Marie Floyd)

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Tags: Medical
Photo by: Marie Floyd |  VIRIN: 150306-F-UY487-004.JPG