The arrival of the vaccine will highlight the real issue here. Airlines need people to return to planes. Hawaii needs people to visit. Nothing will return to normal when there's significant concern about becoming infected - and airlines can talk until they're blue in the teeth about it being ultra-safe on board, but few really believe them.

The only real way for UA to get people back into their system will be to persuade them that the others on board are safe (and, ideally, the others you come across in the airport also). For that to happen, they will need to mandate a negative test and, soon, a vaccine. And so they have to do this for commercial reasons and they have to discourage the super-selfish from breaking those rules. I, for one, am not prepared to set foot on a plane if people who have the disease or are infectious are also travelling.

And, to those who seem to think it's so unfair that this couple might suffer a little inconvenience, such as losing their job, that inconvenience is nothing as to what they might have done to the 87 year old whose seat back they touch on the way to the restroom.