About KLM flight 685 from Amsterdam to Mexico which...

...was turned back before entering US airspace. What a pain for the passengers, and I wonder who gets the privilege of paying for it all. In any case, if you are interested in why it was turned back, this is easily the best coverage I've seen of it. As the writers, Mark Hosenball and Michael Hirsh say, it does show just how hard it is "to tell the good guys from the bad."