NEW : Full service expected to be restored Sunday morning , rail authority says . Obama signs an executive order to create a board to resolve dispute . Strike affected 13 lines serving the suburbs , Philadelphia International Airport . Comment:
NEW : Full service expected to be restored Sunday morning , rail authority says . Obama signs an executive order to create a board to resolve dispute . Strike affected 13 lines serving the suburbs , Philadelphia International Airport . Lines carry about 60,000 commuters daily .