Dennis Grady is currently an Associate and Principal Scientist with the South West Division of Applied Research Associates headquartered in Albuquerque, New Mexico. He performed military service from 1958 to 1963, in the US Navy Submarine Service. He received his BS in physics and mathematics from Lewis and Clark College in 1967, and a PhD in physics from Washington State University in 1971. Following three years on the research staff of Poulter Laboratory at SRI International, he joined Sandia National Laboratories. He retired from Sandia Laboratories as a Distinguished Member of the Technical Staff in 1996 and joined the South West Division of Applied Research Associates the same year. He has been involved with the experimental measurement and theoretical description of condensed matter under the extreme pressure and temperature stimulus of shock and high-velocity impact for more than 40 years. He has published more than 300 technical papers and reports on a range of materials and applications issues in the intense shock environment including experimental methods, electric and magnetic effects, phase transformation, high-pressure equation of state, transient strength, energetic reaction, hypervelocity impact, and dynamic fragmentation. He is a member, or past member, of the American Physical Society, International Hypervelocity Society, American Geophysical Union, International DYMAT Association, and has received honors from, and served various official roles in, these societies. In 2007, he was awarded the George E Duvall Shock Compression Science Award by the APS.