BURR, Devon M., Earth and Planetary Sciences, University of Tennessee, 306 Earth and Planetary Science Building, 1412 Circle Dr, Knoxville, TN 37996-1410, dburr1@utk.edu, BRIDGES, N., Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, MARSHALL, J.R., SETI Institute, 189 Bernardo Ave, Suite 100, Mountain View, CA 94943, WHITE, B.R., University of California at Davis, Davis, CA 95616, and SMITH, J.K., Arizona State University, Tempe, AZ 85287-1404