On September 11th 2001 2 air planes crashed into the twin towers causing multiple deaths. At 8:45 am the north tower was crashed into. At 9:03 the south tower was then attacked. Only 6 people survived the whole attack. 3,000 people were killed in the attack. The North tower was crashed into and had a burning hole in the 80th floor killing hundreds of people. Most of the terrorists had already been living in the U.S. for more than a year.  Other terrorists snuck in the U.S. months before 9/11/2001. 9/11 is a really sad day and a day to always remember.