I think that 9/11  was a very sad day. Many people died , a lot of people where hurt . What hapen  is a tairist hijack a airplane and crash into one of the worldtrade shrter . Then more tairist hijacked one more plane. And crashed it into the 2 tauwer  killing ever one a board of the plane. two more plane had been hijacked one in the penogon one in a flerd.