Blood Drive
Second Lt. Carl Corvin, 28th Aircraft Maintenance Squadron section commander, donates blood during a blood drive at the Rushmore Center conference room, here, Feb. 13. According to the American Association of Blood Banks about eight million volunteer donors donate the 14 million pints of blood used in the U.S. each year. Blood donors can donate as frequently as every 56 days. (U.S. Air Force photo/Senior Airman Anthony Sanchelli)