Maintenance Management Instructors
July 21-23, 2026 | 1:00-3:00 p.m. ET | Online Certificate Program
Tim Coxwell, CAFM, CPFP, CEM
Fleet Management Division Director
Leon County Sheriff’s Office
Tim Coxwell, CAFM, serves as Fleet Director for the Leon County Sheriff’s Office in Tallahassee, Florida, a role he has held since 2013. He oversees a fleet of 593 vehicles and leads a team of six technicians, fostering collaboration between Fleet Customers and Staff to achieve the agency’s sustainability goals. Tim credits his CAFM certification as a cornerstone in transforming and strengthening his fleet operations.
Michael Naglieri
Fleet Maintenance Manager
Davidson County, North Carolina
Michael Naglieri is the Fleet Maintenance Manager for Davidson County, North Carolina, bringing over 15 years of automotive experience to his role. A Certified Automotive Fleet Manager (CAFM), he holds a Bachelor of Applied Science in Management and is also a graduate of Universal Technical Institute. Michael began his automotive career as a technician apprentice and steadily advanced to shop foreman, building a strong foundation in hands-on maintenance and leadership. He is actively involved in the fleet industry, serving on the Southeast Regional Council and Membership Committee for NAFA Fleet Management Association. Outside of work, Michael enjoys spending time with his wife, children, and dogs in North Carolina, and can often be found coaching youth baseball or participating in target shooting.
Nathan Schafer, CAFM, CPFP
Fleet Success Manager
RTA: The Fleet Success Company
Nathan Schafer, CAFM, CPFP is a Fleet Success Manager at RTA. He has nearly 25 years of experience in fleet management and maintenance/repair. Prior to joining RTA, Nathan was the Fleet Manager for SOLID Surface Care, Sandy City, UT and Salmon Electrical Contractors. He was also a Fleet Operations Manager in the United States Marine Corps and has many years turning wrenches supporting heavy duty diesel vehicles, construction, and agricultural equipment. His experience includes vehicle and equipment acquisition and disposal, maintenance and repair, fleet shop management, fleet replacement planning, customer service, and much more. Nathan’s leadership skills have helped him lead fleet organizations to successfully implement changes to improve shop processes, reduce fleet costs, and improve overall management of the fleets that he has been charged with managing. He is a Certified Public Fleet Professional (CPFP), earned his Certified Automotive Fleet Specialist (CAFS), Certified Automotive Fleet Manager (CAFM) and Sustainable Fleet Management Certificate from NAFA, is a certified VMRS Specialist, and has a bachelor’s degree from Weber State University and an MBA from Western Governors University. Nathan is a board member on APWA’s CPFP Certification Council and also part of the NAFA’s CAFM Faculty.