U.S. airmen of the 231st Civil Engineer Flight and Dominican Republic army build sidewalks at La Guazara, Barahona, Dominican Republic, during Beyond the Horizon (BTH) 2014, June 4. BTH is a civic assistance, humanitarian exercise sponsored by Army South and U.S. Southern Command (Southcom). The exercise helps improves the life of local residents by building key infrastructures and providing free medical care.