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Jonathan Walker, PE, PhD

Jonathan Walker serves as the director of Communications, Navigation, Surveillance Systems, and Engineering at U.S. DOT’s Volpe Center in Cambridge, Massachusetts.

Michelle Freeman

Michelle Freeman serves as the director of Volpe Financial Management, where she leads the financial management and oversight of the Volpe National Transportation Systems Center Working Capital Fund (WCF) for the Office of the Secretary of Transportation at U.S. DOT.  

Kristin C. Lewis, PhD

Dr. Kristin Lewis is the principal technical advisor for aviation alternative fuels and resilient supply chains at the U.S. DOT Volpe Center. Her work focuses on resilience in transportation; alternative jet fuel transportation, availability, and sustainability analyses; and environmental...