NGA Raster Roam - Provides public users access to digital imagery of the Earth, maps and other geospatial information produced by the National Imagery and Mapping Agency. - http://geoengine.nima.mil/geospatial/SW_TOOLS/NIMAMUSE/webinter/rast_roam.html
National Imagery and Mapping Agency (NIMA) - Provides imagery, imagery intelligence, and geospatial information in support of national security objectives. - http://www.nima.mil/