Retired U.S. Navy Vice Admiral and past director of. the Department of Energy's National Renewable. Energy Laboratory ("NREL") (1997 until 2005); former. Executive Vice President of the Midwest Research. Institute; former Vice President of the Georgia. Institute of Technology; former Administrator of the. National Aeronautics and Space Administration. Tetra Tech, Inc.; Edenspace, Inc.; Regis University. (Trustee); University Corporation for Atmospheric.