SAN JUAN OPICO, El Salvador – Air Force Capt. Tracie Swingle and Army Sgt. Sergio Lopez, Joint Task Force-Bravo Medical Element, hand out and explain usage of vitamins to a line of locals who came to a makeshift clinic where doctors, nurses and medics from the United States and Salvadoran militaries conducted a Medical Readiness Training Exercise Sept. 27. (U.S. Air Force photo by Staff Sgt. Austin M. May)