Blood test
Senior Airman Kristi Hales examines small vials of blood after they have been put through a spinning process to determine the blood type June 5 at Balad Air Base, Iraq. Before giving blood products to trauma patients, a blood type must be established to ensure the wrong type is not given. Airman Hales is a 332nd Expeditionary Medical Support Squadron lab technician deployed from Lackland Air Force Base, Texas. (U.S. Air Force photo/Senior Airman Julianne Showalter)