U.S. Army Capt. Katherine Matteson, Joint Task Force-Bravo Medical Element public health nurse, provides de-worming medication to a young girl during a Medical Readiness Training Exercise at Jocotán, Chiquimula, Guatemala, April 29, 2016. Vitamins and de-worming medication were provided for both children and adults during a preventive medicine health class prior to patients seeing the medical and dental providers. (U.S. Army photo by Maria Pinel)