Here is a video from the Ontario, CA airport commissioner on how they plan to quarantine the passengers. Its worth a watch. They are doing a lot of things right. However, he said 3-14 day quarantine, I suggest everyone contact him and urge them to do at least 14 days, all passengers, without exception.
https://twitter.com/curthagman/status/1222013786783014913
He says the quarantine area is in an hanger near the airport, with beds, Tv,etc. he also said the passengers will not be taken through the airport, its a chartered plane that will go straight to the quarantine hanger.
Im less worried about this group that all the thousands of other Asian flights with inadequate screening.
And what about the plane and aircraft mechanics.