Dr. Thomas J. Bruno leads the Experimental Properties of Fluids Group of the Thermophysical Properties Division at NIST, Boulder. Dr. Bruno received his B.S. in chemistry from the Polytechnic Institute of Brooklyn (1976), and his M.S. and Ph.D. in physical chemistry from Georgetown University (1978, 1981). He served as a National Academy of Sciences-National Research Council postdoctoral associate at NIST, and was later appointed to the staff. James F. Ely, Group Leader, both of the Thermophysics Division, National Institute of Standards and Technology, Boulder, Colorado.