WRIGHT-PATTERSON AIR FORCE BASE, Ohio - Maj. Laura Wiggins (far right), 445th Aeromedical Staging Squadron critical care nurse, explains proper use of an emergency oxygen bag to Senior Airmen Emily Smith and James Downs, both medical technicians. During their annual tour at the Wright-Patterson Air Force Base Medical Center April 15. Twenty-two ASTS Airmen conducted their annual tour April 6 – 20 at the WPAFB Medical Center where they received training in job classification skills, sustainment and readiness skills in various departments to include the laboratory, pharmacy, nursing, medical administration, surgical technology and radiology. (U.S. Air Force photo/Lt. Col. Cynthia Harris)