Mainstream Commercial Diving

Executive Team


George Frye, Chief Mechanical Officer (CMO)

George has over twenty-five (25) years of mechanical rolling stock experience in passenger rail. George oversees and manages all mechanical operations and training for Drummac. He serves as a direct liaison with Amtrak Mechanical. His previous railroad experience includes many years with Amtrak in Washington, DC as machinist, electrician, car repairman and locomotive dispatch supervisor.


John Bull, Business Unit Leader

John is responsible for the co-management of Drummac with a focus on planning, contracts & administration, business development and employee growth. John is a graduate of Kent State University with a Bachelor’s Degree in Business Management. John has more than a decade of experience in organizational strategy, logistics, and leadership.