Even for people like me, who had to live through September 11, 2001 in one of the directly-affected cities, enough time has passed at this point. While most of us will never forget the events of that day, no matter how much we may or may not want to, the name of this deck is at best distantly connected to those events and shouldn't be any cause for concern. It's like saying a Hawaiian shirt with a firecracker motif would be an insensitive thing to release on December 7, 1953 - the twelfth anniversary of the bombing of Pearl Harbor. Even the most-directly affected survivors, those who lost someone close to them in the attack, have for the most part moved on with their lives, as their lost loved ones would have wanted them to. Grief is meant as a transitional state, not a permanent way of life.