2/1/2013 - U.S Air Force Airman 1st Class Robert Black, 18th Communication Squadron information protection technician, donates blood on Kadena Air base, Japan, Jan. 29, 2013. One unit of blood can be divided into three components: plasma, platelets and red blood cells, which in turn has the potential to save three lives. (U.S. Air Force photo/Naoto Anazawa)

2/1/2013 - U.S Air Force Airman 1st Class Robert Black, 18th Communication Squadron information protection technician, applies pressure to his arm after donating blood on Kadena Air Base, Japan, Jan. 29, 2013. The blood drive was to kick off Blood Donor Month for the Armed Services Blood Program. (U.S. Air Force photo/Naoto Anazawa)