U.S. airmen construct a tent for a mobile hospital, or Expeditionary Medical Support Health Response Team, during New Horizons in Huancavelica, Peru, July 1, 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)