Airlines insist on masks

After flight attendants and pilots criticised them for not doing more to protect employees, large airlines in the US and around the world announced this week that they would require their crews and passengers to wear masks.

American Airlines, Delta Air Lines and United Airlines all said on Thursday that they would start requiring all passengers to wear a face covering in the coming weeks, a policy that will apply to their flight attendants and some other workers, too.

The three join Lufthansa Group — which owns its namesake airline, Swiss International Air Lines and Austrian Airlines — as well as JetBlue and Frontier Airlines, all of which made similar announcements this week. Southwest Airlines has said a policy for flight attendants is coming.