After the events of 9/11, the world was changed forever. A major change occurred with the air travel and the security in airports and busy areas. " After 9/11, Washington federalized airport security by creating the Transportation Security Administration. It was the largest federal startup since World War II. The agency quickly hired more than 60,000 people to screen passengers and their baggage at 450 U.S. airports. At first, TSA checkpoints looked a lot like their private predecessors. But that started to change in 2001. Passengers were required to remove their shoes for X-ray scanning after Richard Reid tried to detonate explosives hidden in his shoes." -“9/11's Profound Effects on Air Travel.” PBS, Public Broadcasting Service, 8 Sept. 2011, www.pbs.org/newshour/nation/how-911-changed-air-travel.