If you have used any means of public transportation recently, you have almost certainly noticed that security measures have been continuously stepped up in recent years. Since al-Qaida leader Osama bin Laden's killing by U.S. Forces in May 2011, many Americans as well as those living in other major cities worldwide are still anxious of a retaliatory terrorist attack today. Security threats can also be countered by alert members of the public who report suspicious activity or items quickly by using dedicated communications systems.
↧