I would hope that the TSA was shrewd enough to determine that the “bombs” were fake (in their checked luggage, I think, so they could make that determination) and just watch them to see what they would do and who they would call.
Don't be using 'shrewd' and 'TSA' in the same sentence ... unless it's a joke. And obviously you were kidding and just forgot to type J/K .
“so they could make that determination) and just watch them to see what they would do and who they would call.”
They were arrested as soon as the plane arrived to Amsterdam.
So why didn’t the US authorities arrest them and not let them on the plane?!
This excuse that they were allowed on the plane “for investigative purposes” is beyond ludicrous!