8/2/2011 - VANDENBERG AIR FORCE BASE, Calif. – Three collection bags hang from a centrifugal machine during the United Blood Services blood drive at the Headquarters Building parking lot here Tuesday, July 26, 2011. The machine is used to separate plasma from red blood cells. (U.S. Air Force photo/Senior Airman Lael Huss)

8/2/2011 - VANDENBERG AIR FORCE BASE, Calif. – Phillip Draeger, a Commissary bagger, donates blood during the United Blood Services blood drive at the Headquarters Building parking lot here Tuesday, July 26, 2011. Mr. Draeger is a recent graduate of Cabrillo High School and has been donating blood to the UBS for about two years. (U.S. Air Force photo/Senior Airman Lael Huss)

8/2/2011 - VANDENBERG AIR FORCE BASE, Calif. – A phlebotomist with the United Blood Services prepares to extract blood from Tech. Sgt. Mike Ebert, the Joint Functional Component Command for Space non-commissioned officer for special technical operations, during a blood drive at the Headquarters Building parking lot here Tuesday, July 26, 2011. (U.S. Air Force photo/Senior Airman Lael Huss)