Also “Ground delays issued amid shortage of air controllers as shutdown continues”

https://www.nbcnews.com/news/us-news/ground-delays-issued-sh...

> The advisory, which was issued by the Air Traffic Control System Command Center, said “users can expect a period of time later in the evening when no arrivals will be able to land as there will be no certified air traffic controllers available (Thursday night) at MCO.

This seems a bit more serious than the hourlong LAX and JFK ground stops. I imagine it won't be long before Congress has to start making some hard decisions. If you can call subsidizing healthcare and/or permitting the release of sex trafficking documents a hard decision.