Um, I don't think I was born yet. But I am always reminded of something quite horrible, not close to this of course.
My aunt says I caused Cherynobl. Heh...I was born on August 6, 1986. About 5 mins before it happened actually.
But seriously though, I've seen the Challenger explosion on the TV, I think they showed a bit of it for what happened with Columbia explosion a year or so ago. I don't remember much...but it looked horrible. My prayers are with all of those lost on shuttle explosions/accidents.