PETER WILHELM, NAE, is the director of the Naval Center for Space Technology, where he has led in the development of two upper-stage vehicles that incorporated solid fuel, bipropellant, monopropellant, and cold gas rockets. He also has directed efforts to develop advanced technology to lower space transportation costs. These technologies include advanced propulsion (hybrid, bimodal, and electric), as well as structures, guidance, and mission operations, including reusability. Mr. Wilhelm's involvement in the development of low-cost launch technology began with the initiation of the Sea Launch and Recovery (SEALAR) Program. Mr. Wilhelm has a B.S. in electrical engineering from Purdue University and is a fellow of the American Institute of Aeronautics and Astronautics.