U.S. Marine Corps Lance Cpl. Esgar Castro, a water support technician from 8th Engineer Support Battalion (8th ESB), 2nd Marine Logistics Group, sets up an air vent that will be attached to a 307 tent at Puerto Barrios, Guatemala, July 24, 2014. The Marines from 8th ESB are helping to remodel buildings in support of Southern Partnership Station 2014, a combined joint exercise focused on subject matter expert exchanges with partner nations and security forces as well as military to military engagements and community relations projects in Central America. (U.S. Marine Corps photo by Lance Cpl. Chloe Nelson, 2D MAR DIV Combat Camera/Released)