1. Gianforte School of Computing, Montana State University, Bozeman, MT, USA
2. Department of Political Science, Montana State University, Bozeman, MT, USA
3. Virginia Modeling, Analysis and Simulation Center, Old Dominion University, Norfolk, VA, USA
4. Gianforte School of Computing, Montana State University, Bozeman, MT, USA; Idaho National Laboratory Joint Appointment, Idaho Falls, ID, USA