On a sole source basis the National Geospatial-Intelligence Agency (NGA) intends to execute contract modifications with DigitalGlobe, Inc. and ORBIMAGE, Inc. to extend each vendor's contract, with options, through June 30, 2010. Each vendor provides high resolution commercial satellite imagery and imagery derived products. High resolution geospatially accurate imagery and imagery derived products are key elements in support of multiple U.S. Government initiatives. The continued acquisition of DigitalGlobe and ORBIMAGE high resolution commercial satellite imagery supports these requirements. Each vendor’s satellite constellation has the unique technical characteristic which justifies sole-source acquisitions that no other commercial remote sensing high resolution vendors can equal at this time. Only DigitalGlobe and ORBIMAGE can provide these products with the high-resolution imagery required by NGA. See Note 22.