U.S. Air Force Senior Airman Nicholas Williams, 823rd Expeditionary RED HORSE Squadron structural supervisor, out of Hurlburt Field, Fla., and Mobile, Ala. native, grinds a portion of the handrail at Gabriela Mistral school site in Ocotes, Honduras, July 10, 2015. The 823rd ERHS members are constructing a new two-classroom schoolhouse which includes bathrooms with working plumbing as part of New Horizons Honduras 2015 training exercise. New Horizons was launched in the 1980s and is an annual joint humanitarian assistance exercise that U.S. Southern Command conducts with a partner nation in Central America, South America or the Caribbean. The exercise improves joint training readiness of U.S. and partner nation civil engineers, medical professionals and support personnel through humanitarian assistance activities. (U.S. Air Force photo by Capt. David J. Murphy/Released)