Senior Airman Kristina Macias, 28th Medical Operations Squadron public health technician, briefs Staff Sgt. Hope Davis, 28th Munitions Squadron conventional maintenance crew chief, on health-related issues as part of her deployment out-processing at the Public Health clinic on Ellsworth Air Force Base, S.D., March 28, 2013. Public Health Airmen provide multiple services to include retraining and permanent change of station clearances, travel medicine briefings and many additional services to Airmen and their families. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)