... least $10 billion, if not more. The airline industry isn't a single unit though and through its demise, many other types of business will suffer as well. There will be a ripple effect to hotels and car rentals with bookings decreasing and hire rates slowing down. Already, the industry has seen a huge drop in demand for the number of tickets. This is partly due to the lack of requirements before the attacks, but also because of the ever-increasing and reintroduced fear of flying. Although flying is safer than ever now, there is a general consensus that if such attacks could happen once then they can happen again - despite the tightened security worldwide. However, because of the increased security, some will see it as an inconvenience and attempt to make their journeys by other modes of transport. As the cost of running an airline is so high (tickets, fuel, pilots ...

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