John Sarrao has been named Los Alamos National Laboratory’s Associate Director for Theory, Simulation, and Computation, replacing Paul Dotson, who has served in an acting capacity since August 2011. Sarrao, who joined the lab in 1997, has held several management positions, including Materials Physics and Applications division leader, the director of the lab’s DOE Office of Science programs, and the director of the Material Radiation Interactions in Extremes (MaRIE) program. Sarrao will be in charge of the lab’s Advanced Computing Solutions office as well as its Computer, Computational, and Statistical Sciences, High Performance Computing, and Theoretical divisions.