Airmen double donate red blood cells
VANDENBERG AIR FORCE BASE, Calif.-- Capt. Jeannette Sandoval, a 392nd Training Squadron instructor, waits as a machine separates her red blood cells from her plasma and platetes during a blood donation at the 381st Training Group auditorium here Wednesday, April 4, 2012. The average red blood cell transfusion is three pints and more than 38,000 blood donations are needed every day. (U.S. Air Force photo/Staff Sgt. Levi Riendeau)