U.S. Army Spc. Lauren O'Neal prepares to receive platelets from Army Spc. Samantha Criscio at Craig Joint Theater Hospital on Bagram Airfield, Afghanistan, Dec. 31, 2015. In order to extract platelets, a critical life-saving blood component, apheresis machines are used to draw blood and return the unused portions to the donor. O'Neal is a medical laboratory technician assigned to the 153rd Blood Support Detachment. Air Force photo by Tech. Sgt. Robert Cloys