ELLSWORTH AIR FORCE BASE, S.D. - Senior Airman Clayton Luker, 28th Medical Operations Squadron aerospace medical technician, places a “patient” into an ambulance during readiness skills verification training, May 17. Members of the 28 MDOS train regularly to provide a fit and healthy force for global response. (U.S. Air Force photo/Airman 1st Class Joshua J. Seybert)