Gillespie Field is a San Diego Trolley station located across Marshall Avenue from Gillespie Field airport which is served by the Green Line. The next station north is Santee Town Center, which is the Green Line's terminus, and the next station south is Arnele Avenue.Prior to July 2005, all Orange Line trolleys used to continue through this station to Santee Town Center. With the opening of the new Green Line, this service was replaced, and Orange Line trolleys used to terminate at this station. This was due to the path between Gillespie Field and Santee Town Center being single tracked, and having two lines running on that route would cause operational issues. Orange Line service was further truncated to El Cajon Transit Center on September 2, 2012 as part of a system redesign due to low ridership between the two stations, so only the Green Line now serves this station.