this date in U. S. history
September 11, 2018
On September 11, 2001, Saudi Arabians, whom the F.B.I. knew had been training to fly airplanes without learning to takeoff or land,
crashed two airliners into the 110-story twin towers of the World Trade Center in New York City.
Other Al Qaeda hijackers rammed an airliner into the Pentagon, and a fourth airliner crashed in a field in Pennsylvania.