Rachel Costello is a Senior Analyst with the RAND Corporation where she applies modeling and simulation, data analysis, and wargaming techniques to inform public policy decisions. She is a lead researcher on a series of projects which have built an analytic framework to identify cost- effective ways to maintain air operations during a high-intensity conflict. Her work examines tradeoffs between air base posture, airfield infrastructure, passive defense, active defense, and novel operating concepts; and considers both operational effectiveness and logistic feasibility. Costello has led and contributed to projects focused on joint force deployment, distribution, and sustainment. Costello received her B.A. in physics from the College of Wooster and her master’s in physics from the University of Utah.