Make face masks mandatory
Put more space between passengers
Test passengers before boarding
-- Suzanne Rowan Kelleher, Forbes
I think every business is going to be operating that way, at least initially. Our office in Silicon Valley just went to mandatory masks this week, by order of the county. For the airlines (and hotels, rental cars, etc.) though, demand for their services is simply non-existent. I've had an April conference in Raleigh rescheduled to June, then cancelled completely, and of course all of my travel to the office in Silicon Valley is cancelled at least through June. The current consensus seems to be "if you can work from home, work from home" which enhances distancing in the office. Amazon in the Seattle area is working from home through October. Vacation travel is also non-existent, with Las Vegas and the major theme parks all closed and a 14-day quarantine for travelers arriving in Hawaii.