HomeFactbox-U.S. airlines drop mask requirements for passengers, employeesDelta Air Lines passenger planes parked in Birmingham

Delta Air Lines passenger planes parked in Birmingham

FILE PHOTO: Delta Air Lines passenger planes are seen parked due to flight reductions made to slow the spread of coronavirus disease (COVID-19), at Birmingham-Shuttlesworth International Airport in Birmingham, Alabama, U.S. March 25, 2020. REUTERS/Elijah Nouvelage