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Heather, Philadelphia: I was babysitting my 2-year-old nephew. We were watching Scooby-Doo when my Dad called and said "are you watching TV?" I said "of course, cartoons." He said turn on the news a plane just hit the WTC. Thinking a horrible accident just happened I flipped the channel just as the second plane hit the towers. I dropped the remote and just stared at the TV trying not to alarm my nephew. I think I went numb as the enormity of the tragedy unfolded. I remember looking at my nephew and thinking the world has changed forever.