That’s what America is about these days—if you build your cause up to be noble enough, you think you have the right to demand that others sacrifice for it or that you can demand anything for it. People have lost all sense of proportion.
Instead of seizing and lauding the deaths and "achievement" of the terrorists, memorialize the "let's roll" area in the sky.
"Seize" and honor the area in the sky and make it a NOTAM no-fly zone memorial that pilots can mention over the intercom as passengers fly next to it.