U.S. Air Force Capt. Nicole Ferguson, 633rd Medical Support Squadron laboratory officer, has been in the Air Force for six years, and has worked with blood, platelets and plasma at deployed locations and at Langley Air Force Base, Va. Women’s service in the U.S. military medical fields dates back to the birth of the nation when they worked as battlefield nurses during the American Revolution. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)