Given that the U.S. army has bradley fight vehicles and multi-ton Abram tanks traveling consistently down that road, along with the threat of UIDs, it's surprising the car was moving at the 30 MPH as the Italians claim. None-the-less, the Italian agent was well versed in the procedures involved when coming up to a U.S. check-point. Plus, the Americans control the airport that Sgrena was being driven too. The Army had to have known that her release was scheduled for that evening.
Is what you just said totally different than the reports? Or what you have stated earlier?

Is it a fact that the army knew?

Do you know what friendly fire is Dan? Do you think troops fire on friendlies on purpose?