How has travel in the u. s been affected by the 9/11 attacks?

Travel in the U.S has been affected by the 9/11 attacks drastically.  One example of this would be the increase in security at the airports.  

Although this may be the opposite of what you think i will say it anyway. you were brought into this world for a reason and you still have soo much ahead of you. not everybody has an opportunity of living a great life, but it doesn’t give you a reason to end everything. somebody in the world loves you, and imagine what you would do to them if you left forever.