A collection specialist with the American Red Cross marks a donor’s arm as part of the donation process during a blood drive at Whiteman Air Force Base, Mo., Jan. 13, 2016. The blood donation is a four-step process: registration, medical history and mini-physical, followed by the donation. Each donation of 1-pint can contribute to saving up to 3 lives. (U.S. Air Force photo by Tech. Sgt. Miguel Lara III)