Again, your are flat out wrong. The FAA NOTAM was issued at 12:15, BEFORE all but one airline had cancelled.
I already gave you the report and posted it yesterday ... four major airlines suspended - indefinitely - their flights and that was before the FAA.
Quoting from an article ...
On Tuesday, four major U.S. airline carriers announced their decision to cancel flights heading to Israel indefinitely, one specifically citing the danger of Gaza rocket attacks near Israels Ben Gurion airport.
Shortly afterwards, the Federal Aviation Administration (FAA) said it told all U.S. airlines that flights to the airport are prohibited for 24 hours, according to The Associated Press.
Israel Transportation Minister: Cancellation of Flights to Israel Gives a Prize to Terror
http://www.freerepublic.com/focus/news/3183687/posts?page=35