United Blood Services hosts blood drive
First Lt. Dillen Stuhlsatz, 34th Bomb Squadron weapons systems officer, donates blood in the Deployment Center sterile room at Ellsworth Air Force Base, S.D., Jan. 22, 2016. Blood donation is a simple four-step process: registration, medical history and mini-physical, donation and refreshments, and provides live-saving blood for patients in the area. A simple pint of blood can potentially save three lives. (U.S. Air Force photo by Airman Donald C. Knechtel/Released)