FILE PHOTO: FILE PHOTO: A United Airlines worker assists travelers after the Biden administration announced it would no longer enforce a U.S. coronavirus disease (COVID-19) mask mandate on public transportation, following a federal judge's ruling that the 14-month-old directive was unlawful, at Ronald Reagan Washington National Airport in Arlington, Virginia, U.S., April 19, 2022. REUTERS/Kevin Lamarque/File Photo/File Photo
