It has been a decade since the terrorist attacks in America.
That decade wrought changes, including a new meaning of what it means to be an airline.
Perhaps surprisingly to anyone who recently went through airport security, its essence is a heightening of many of the same themes that gave aviation its attraction in the first place.
Ten years ago American Airlines made this clip of what it meant to be a post-9/11 airline.
Today, it is just as relevant.