WASHINGTON (Reuters) -The U.S. Justice Department on Wednesday appealed a judge’s ruling ending a mask mandate on public transportation and airplanes, a spokesman said, after the Centers for Disease Control and Prevention (CDC) said the measure was still needed. A U.S. district judge ruled on Monday that the mandates, which apply to planes, trains and other public transportation, were unlawful. The Justice Department said it would appeal the ruling if the CDC determined the 14-month-old mandate was still needed. The CDC said on Wednesday it had asked the Justice Department to proceed with the …