Its four mainlines remain offline. Colonial said it's developing a restart plan, but provided no timetable as to when full service will be restored. "We are in the process of restoring service to other laterals and will bring our full system back online only when we believe it is safe to do so, and in full compliance with the approval of all federal regulations," Colonial said in a statement. The federal government is working to avoid supply disruptions after the company suspended operations, U.S. Commerce Secretary Gina Raimondo said Sunday morning. "This is what businesses now have to worry about," Raimondo said during an interview on CBS' "Face the Nation." "Unfortunately, these sorts of attacks are becoming more frequent. They're here to stay."