Marshal is the Director of Product Line Management at Panasonic Avionics Corporation in Lake Forest, California, where he is responsible for the development of next-generation in-flight entertainment and communication systems for Airbus, Boeing, and most of the world's airlines.

A pioneer during the technology boom of the mid-1990s, Marshal was involved in a National Science Foundation (NFS) project that investigated the positive impacts of internet access on low-income “informationally disadvantaged” families and a Department of Education (DOE) project designed to bring internet access to K-12 schools at a time when words such as E-mail and Browser were relatively unknown. Soon after, Marshal helped establish East Central Florida’s first commercial internet service provider.

Marshal’s interests also cross into the world of public service. As former Reserve Police Officer, he is a strong supporter of emergency services and law enforcement. Marshal also holds the rank of Captain in the United States Air Force Auxiliary, where he has been involved with Aerial Search and Rescue, Counterdrug Reconnaissance, and Public Affairs.