Security Issues!
Repeated attempts to blow up airplanes and to perpetuate other acts of terror around the world show just how fragile even the tightest security programs can be. Security measures can be evaded or things can slip through. Admittedly, many acts of terrorism have been averted, but all it would take is one huge disaster to shake up the world even more than after the September 11, 2001, terrorist attacks in the United States.