Rafael Martinez, 50, waits to be seen by U.S. and Costa Rican doctors during a Medical Readiness and Training Exercise Sept. 11, 2009 in Tolokicha, Costa Rica. Mr. Martinez, who hadn't seen a doctor in more than 2 years, walked one-and-a-half hours to the exercise site after hearing Blackhawk helicopters fly by delivering people and supplies to the effort. (U.S. Air Force photo/Tech. Sgt. Mike Hammond)