How has travel in the united states been affected by the 9/11 attacks

In months and years after the 9/11 attacks, travel in the United States has been affected quite negatively. Prior to the attacks, airlines were getting a lot of money from tourists and potential workers who wanted to start a new life in America. However, after the attacks, the number of visitors plummeted, making America lose a lot of money due to this. In the years between 2001 and 2010, the US airline industry lost up $74 billion. The situation has stabilized since.