The Costa Rican National Center for Advanced Technology (CeNAT) is sponsoring NASAs G-III(C-20) UAVSAR science deployment to San Jose Costa Rica April 25-28 2011. NASA is very thankful for their support and has offered to provide a Top-Level presentation on the G-III UAVSAR program with specific emphasis on the science conducted in Costa Rica. The presentation will overview the G-III capabilities and the various science applications of UAVSAR. Only technical and scientific data that is already in the open literature will be presented.