MIRA VALLE LA PAZ, Honduras - U.S. Marine Corps Lance Cpl. Casey Ruff puts the finishing touches on a sidewalk after running a water line to a school here from a water tower across the street. The lance corporal is assigned to Alpha Company, 4th Combat Engineering Battalion in Crosslands, W.V. He is here for three weeks with Beyond the Horizon, a large-scale exercise completing medical readiness missions and civil engineer projects throughout Central America. (U.S. Air Force photo/ Tech. Sgt. Rebecca Danét)