Donald Wyman Vasco is a senior scientist at the Lawrence Berkeley National Laboratory, recognized for his contributions to the development and application of asymptotic techniques to the modeling and inversion of fluid flow and geophysical data. Dr Vasco is the recipient of the Society of Petroleum Engineers' Cedric K. Ferguson Certificate for the best peer-reviewed paper of 1999, and has authored or co-authored over 100 peer-reviewed articles on geophysical and hydrological inverse methods and modeling techniques. Akhil Datta-Gupta is University Distinguished Professor at Texas A&M University, and is well known for his contributions to the theory and practice of streamline simulation in petroleum reservoir characterization, management and calibration of high-resolution geologic models. Professor Datta-Gupta is the recipient of the Society of Petroleum Engineers' John Franklin Carll Award (2009) and Lester C. Uren Award (2003) for his contributions related to reservoir characterization and 3-D streamline simulation. He served as a member of the Polar Research Board of the National Academy of Sciences, Technology Task Force of the National Petroleum Council and was elected to the US National Academy of Engineering in 2012.