The Scientific Advisory Committee (SAC) has been an important part of the USTUR for many years. The original advisory committee included many notable names from the field of radiation biology: Clarence C. Lushbaugh, Thomas F. Mancuso, J.H. Sterner (chairman), Robley D. Evans (vice-chairman), Herbert M. Parker, Lloyd M. Joshel, and Wright Langham. Annual meetings of the SAC bring together the USTUR faculty and staff, SAC members, the Department of Energy representative, and interested people from the scientific community. At these meetings, USTUR faculty report on progress that has been achieved, and the SAC makes recommendations for the upcoming year.