Arney,
"It's true that it is "dumb luck" that Mr Duncan didn't become symptomatic during his long trip to Texas, but even if he did, I think we need to be more careful about how we define "exposures"."

On the same CDC page shown above are the instructions given to the worlds airlines for responding to the age of Ebola. All the airline pilots I know (and therefore probably their flight crews as well) have been given this information. The response would greatly reduce the risk to both crew and passengers.

Respectfully,

Jerry