an Entity references as follows:
Durham School Services is a school bus operator providing tendered pupil transportation throughout the United States, based in Lisle, Illinois, and currently operating in 32 states. Founded in 1917 with three buses in the San Gabriel Valley, it became a subsidiary of National Express in 1999. North American sister companies are Stock Transportation in Canada and Petermann Bus in Ohio. As of September 2017, it operated 15,500 buses in 32 states.