Flower the children! It was someone calling to check if they served HAM HOCKS on that flight.
OBTW, the way the threat was received may be telling. If I'm Alex Quaida, I want the people exposed and disseminated into their own spheres of movement BEFORE I give a warning, to maximize impact. So if I called in and claimed its on board, than its probably bogus. But if someone squealed, than that's different.
But if I'm Red Army General Long Duc Dong, I want attention, to send a warning, to remind the US what we are capable of. So what in the wide, wide world of sports is going on that we are thinking of renewing military cooperations with them?
...or small pork.