While scheduling a dental checkup in 2002, the receptionist said to me, "OK, so your next appointment will be on September 11." After a pause, she added, "That sounds strange to say, doesn't it?"
Yes, unfortunately. Years later, it still does.
For perspective and a conclusion you can take to heart, however, watch Craig Ferguson's September 11, 2006 monologue from "The Late Late Show." Ferguson's memory of where he was on 9/11/01 and the metaphor he uses from it present a perfect mix of fury over the attacks and defiant resolve that the attacks will not destroy what America represents.