Prior to joining OGC, Mr. Percivall was Chief Engineer with Hughes Aircraft for NASA's Earth Observing System Data and Information System (EOSDIS) - Landsat/Terra release; Principal engineer for NASA's Digital Earth Office; and represented NASA in OGC, ISO and CEOS. He was Director of the GST's Geospatial Interoperability Group. Previously, he led developments in Intelligent Transportation Systems with the US Automated Highway Consortium and General Motors Systems Engineering including the EV1 program. He began his career with Hughes as a Control System Engineer on GOES/GMS satellites. He holds a BS in Engineering Physics and an MS in Electrical Engineering from the University of Illinois - Urbana.