At first it was frightening. The very first time I had a "transmission" dream I woke up in a terror and had to call a friend in the middle of the night just to calm down. But over the years I learned to greet it all as a blessing. It's Spirit trying to bless me in a way that gets past all the blocks my conscious mind puts up. Once I started seeing them that way, I love having those dreams and always heed them to the best of my ability the next day. With the 9/11 one, I don't really see what I could have done differently, but at least the shock of it all may have been a bit less than it otherwise would have been. I'll never know, but I trust the awareness that shares such things with me.