The U.S. Army Corps of Engineers has begun seeking solicitations for a potential $499 million follow-on indefinite-delivery/indefinite-quantity contract to research, integrate, develop and support the service branch's geospatial systems and services. A notice posted Friday on SAM.gov states that the GRIDS IV contract will have an ordering period of five years and covers the provision of technical expertise to help the Army Geospatial Center coordinate, integrate and synchronize geospatial data standards and requirements.