Staff Sgt. Brittinie Alvarez, 11th Wing Commander’s Action Group member, donates a pint of blood during a drive dedicated to the memory of Senior Airman John E. King II at the Joint Base Andrews Theater on March 22, 2013. More than 75 service members donated blood to be used at Malcolm Grow Medical Center on Joint Base Andrews and several other treatment facilities in the National Capital Region. (U.S. Air Force photo/Airman 1st Class Nesha Humes)