Today, if we ask ourselves that are we safe in our environment? The answer would not be that easy like “Yes” or “No”, as there are several other factors that need to be considered before answering these kinds of controversial questions. The 9/11 attacks have made the aviation security of the United Stated of America aware of its weaknesses and have informed the world about the loopholes that were present in national security level. Major changes have taken place within just two months after the 9/11 attacks. The Congress has established a specialized Transportation Security ...