U.S. Air Force Staff Sgt. Joel Bradley, engineering assistant for the 823rd Red Horse Squadron, unravels a string March 23, 2013, at the construction site of the future Crooked Tree Government Primary School. Civil engineers from both the U.S. and Belize will construct various structures at schools throughout Belize as part of an exercise called New Horizons. (U.S. Air Force photo/Master Sgt. James Law/Released)