As far as "airport-travel related systems that could be affected without seriously impacting anyone's travel", "airport websites" are the top of the list. I th

As far as "airport-travel related systems that could be affected without seriously impacting anyone's travel", "airport websites" are the top of the list. I think the last time I used one, it was to find out if there was an airport lounge in a specific terminal. "Airport Websites Briefly Unavailable" is a much less exciting, but much more accurate headline.