U.S. Air Force Capt. Michella Mayo-Smith, an emergency services clinical nurse from the 633rd Medical Operations Squadron, calls a patient to be triaged in the USAF Hospital Langley Emergency Room at Langley Air Force Base, Va., Feb. 26, 2016. All of the nurses and doctors assigned to the ER specialize in trauma. (U.S. Air Force photo by Staff Sgt. Aubrey White)