John Brennan performs computational and theoretical research to determine the physical and chemical processes of materials of interest to the Army at both the atomistic and coarse-grain levels. His duties include leading ARL’s micro- and mesoscale modeling efforts to study the multiscale response of energetic materials. He received a Ph.D. in Chemical Engineering from Wayne State University in 1999 under William Madden. Dr. Brennan then was a research associate at the Institut de Recherché sur la Catalyse (CNRS) in Lyon, France, after which he went on to another research associate position in the Department of Chemical Engineering at North Carolina State University with Prof. Keith Gubbins. He has been at ARL since 2001, where he first joined as a National Research Council Postdoctoral Fellow in Dr. Betsy Rice’s group.