In observance of 911 ten years later...
 

I'd like there to be an air traffic moratorium on 9/11/2011

That would be interesting, probably not feasible though.

On flights into America?
Or flights leaving America?
Or just internal flights?

With the airline industrry suffering from the global economic downturn, I can only see the last option carrying any kind of possibility. And that's gotta be a slim one too.

Sept. 11th is on a Sunday this year. The day that people who traveled someplace all fly back home so they can go to work on Monday morning. I find your proposal... unlikely.

How about an air traffic control moratorium?

Reenactors can buzz Trump Towers in Air Force One.

Then the terrorist will have won.