[ARCADIA]

americans knew we were coming -they were 700 meters away from the airport, which meant they passed already all the controls

This doesn't make sense. What do you mean the Americans knew 700m away from the check point? That means that you failed to coordinate the move before hand; and you expect the US representative on the other end of a telephone call to convey information to a field unit, in the time that it takes your car to cover 1/3 of a mile!

BTW: How would a checkpoint know that it is them in the first place?

[chuckwalla]

How also would the US know there was no bomb in the car.
They got the car from the terrorists.
The trustworthy terorists.