Illinois Army National Guard (ILARNG), Major (MAJ) Sue Mantel, Company C (Medical), 634th Forward Support Battalion (FSB), listens to a young Guyanian boys lungs during an Operation NEW HORIZONS 2004 Medical Readiness Exercise (MEDRETE) in New Amsterdam, Berbice District, Guyana (GUY). Operation NEW HORIZONS 2004 is a four-month joint service training exercise being held in Guyana by elements of the US Southern Command (USSOUTHCOM) and the Guyana Defense Force (GDF), and it involves combined teams of US and GDF military personnel working on several construction projects and two MEDRETEs