Air Force reservists from the 916th Aerospace Medicine Squadron, Seymour Johnson Air Force Base, N.C., and other volunteer medical providers take refuge in the shade of a KC-135R Stratotanker that transported them to Managua, Nicaragua. Their medical readiness exercise began Aug. 6, 2011. They plan to provide free medical care to about 10,000 indigent citizens during the mission. (U.S. Air Force photo/Senior Airman Meredith A. H. Thomas)