U.S. railroad commuter agencies which are a state agency operated as a leg of its corresponding Department of Transportation, SEPTA is not a state agency and is beholden primarily to the five local governments which comprise it. Williams questioned why there has never been any massive public push to force SEPTA to "clean up its act." He concluded that the crisis within SEPTA "merely reflects the broader problems of local provincialism and petty political squabbles which are so rampant within the region." Williams later commented that "unfortunately, there does not seem to be any group out there influential enough to bring shame on SEPTA, and SEPTA just may be beyond shaming anyway." Expansion Service to Reading Terminal ended on November 6, 1984, in anticipation of the opening of the Center City Commuter Connection, which opened on November 12, 1984. The tunnel, first proposed in the 1950s, is an underground connection between PRR and Reading lines; previously, PRR commuter trains terminated at Suburban Station and Reading at Reading Terminal. The connection converted Suburban Station into a through-station and rerouted Reading trains down a steep incline and into a tunnel that turns sharply west near the new Market East Station (now Jefferson Station). The conversion was meant to increase efficiency and reduce the number of tracks needed. On April 28, 1985, the Airport Line opened, providing service from Suburban Station via 30th Street Station to Philadelphia International Airport. This line runs along Amtrak's NEC, then crosses over onto Reading tracks that pass close to the airport. At the airport, a new bridge carries it over Interstate 95 and into the airport terminals between the baggage claim in arrivals and the check-in counters in departures. In 1990, R5 service was extended from Downingtown to Coatesville and Parkesburg. However, on November 10, 1996, R5 service to Parkesburg was truncated to Downingtown. In 2006, SEPTA started negotiations with Wawa Food Markets to purchase land in Wawa, Pennsylvania to build a new Park-and-Ride facility for a planned restoration of service between Elwyn and Wawa on the Media/Wawa Line, which previously ran to West Chester. Shrinking service Between 1979 and 1983, diesel locomotives were phased out. With insufficient operating funds and a desire to avoid maintaining deteriorating lines, SEPTA cut various services throughout the 1980s. R3 West Chester service was truncated to Elwyn on September 19, 1986, due to unsatisfactory track beyond. R6 Ivy Ridge service was