GSTI, also known as Geo-Spatial Technologies, has expertise in the research, development and application of geospatial technology for advanced 3-D imaging, reconnaissance, remote sensing and mapping systems. It specializes in system development and integration for urban warfare and homeland security applications and operations. The company develops systems for airborne, vehicle-based and terrestrial sensors for mapping urban terrain and structures. GSTI maintains a staff of more than 40 employees. It is owned and operated by SAIC, which is one of the largest employee-owned research and engineering companies in the United States. SAIC has more than 43,000 employees in over 150 cities worldwide. GSTI is located in Springfield, Va.