I can remember exactly where I was on 9/11/01. And I can remember the feelings I felt on that day. I always take a moment and reflect on the tragedy of those events, but I remember that people die tragic deaths every day of the year, whether the global, national, state, or city eye is on the event or not. We will all face death in the future. So I asked myself today "how do I memorialize this day on my blog"? I think the best thing I can do is praise God, from whom all blessings flow, and acknowledge that his sovereignty is perfect and perfectly executed, though it's beyond my comprehension.
Also, I encourage you to read John Piper's blog entry on "How to Mark and Honor this Day".