> it seems like they could go under very easily if hit by something unexpected They do. http://en.wikipedia.org/wiki/Airline_bankruptcies_in_the_United_States

> it seems like they could go under very easily if hit by something unexpected They do. http://en.wikipedia.org/wiki/Airline_bankruptcies_in_the_United_States http://en.wikipedia.org/wiki/Airline_bankruptcies_in_the_Uni...