KLM Flight to Mexico returned to Amsterdam

On Friday, the US refused access to this flight because of security concerns about two passengers on board. The flight re-crossed the Atlantic, returned to Amsterdam, removed the two passengers in question, and flew back to Mexico City.

The two unnamed passengers, who were not suspected of any crime, were not detained, and 'went on their way'. It also appears these persons were not on the no fly list. KLM is considering filling a claim against both of the Governments to help cover the cost associated with this delayed flight.

Now...

can anyone explain this whole event, or is it just another exercise in overwhelming paranoia?

and now KLM wants to know how the US got the passenger list for a flight NOT coming to the US.

AMSTERDAM — Dutch airline KLM has demanded the US explain how it gained insight into passenger details of a flight US authorities turned back from its airspace despite the fact it was not scheduled to land on American territory.

KLM said on Monday US authorities are not allowed to have access to passenger details on flights that do not land in America. The airline said US authorities are only given restricted access to details on US-bound flights.