Master Sgt. Dan Hjelstrom, Presidential Airlift Group crew chief, speaks to his technician while giving blood during the Armed Services Blood …

Blood pumps into test tubes during the Armed Services Blood Bank Center’s blood donation on JBA. The test tubes are used to test for blood-bor…

Senior Master Sgt. Frank Worsham, Air National Guard Readiness Center avionics functional area manager, squeezes a ball while giving blood dur…