Project HOPE volunteer Dr. Melvin Burger, right, evaluates patients during a New Horizons 2012 medical readiness and training exercise in Bernales, Peru, July 21, 2012. New Horizons is a U.S. Southern Command-sponsored annual series of joint humanitarian assistance exercises deploying U.S. military engineers, veterinarians, medics and other professions to Central and South American nations for training, construction projects and to provide humanitarian and medical services. (U.S. Air Force photo by Staff Sgt. Michael C. Zimmerman/Released)