My concern was that the requirements vary by airline. Given they are all regulated by the FAA I would have hoped that they would step in and make a set of requirements that apply to all. Some airlines are limiting seating, others are not or are ambiguous about it and I have no doubt it will vary even by flight/destination, etc. These planes are enclosed with recycled air so the time/exposure is very high if anyone on board has it but is not yet showing symptons. Masks for passengers and crew, and no more than 60% of capacity would seem to me to be a minimum requirement. We don’t fly again until July (unless things go south again) so I hope it is a non-issue by then.