More airports add PHL-like transit links

An article today about U.S. airports that are adding rail links for passengers barely mentions PHL, one of the first airports to have a rail line that connects directly to a metro area's public transport system, but still includes some useful inforrmation for travelers. The USA Today story mentions PHL last in a list of eight of the 20 largest airports with rail links similar to what's available at many airports in Europe and Asia.