The relevance for 9/11 is that what 9/11 marked was the beginning of a struggle in which the terrorists come at us and strike us here on our home territory. And it's a global operation. It doesn't know national boundaries or national borders.
How will you know the difficulties of being human, if you are always flying off to blue perfection? Where will you plant your grief seeds? Workers need ground to scrape and hoe, not the sky of unspecified desire.
All morning they watched for the plane which they thought would be looking for them. They cursed war in general and PTs in particular. At about ten o'clock the hulk heaved a moist sigh and turned turtle.