Col. Brett Call, of the Ohio Army National Guard Medical Detachment, explains to a young boy how to use the prescriptions he has received in Rancho Quemado, El Salvador, on July 26 as a part of a U.S. Army Medical Readiness Training Exercise. The training exercise, which gave medical care to more than 7,000 people, was carried out in partnership with the government of El Salvador and consisted of four sites during 10 days of treatment.