Provides a performance of duty presumption for diseases of the heart for members who serve as an ambulance medical technician, ambulance medical coordinator, ambulance medical technician/supervisor or a member who performs ambulance medical technician related services, or a police medic, police medic coordinator, police medic supervisor, bureau director police emergency ambulance services - county, assistant bureau director police emergency ambulance services - county, or a member who performs police medic or police emergency ambulance related services and is employed in the Nassau county police department.