I wasn't at WDW, but my 9/11 experience was one I will never forget.
I spent the summer of 2001 with a mis-diagnosed hernia, and had exploratory surgery scheduled for Wednesday, 9/12/01. I was in alot of pain, and was instructed to rest as much as possible prior to the surgery. My DH (then, my boyfriend), was still in tech school in Cherry Hill, NJ and had to be in class at 8am, so I had gotten up to make sure he'd get off to class on time, and then laid back down on the couch and fell asleep around 7am.
I woke suddenly around 8:55am, which was unusual, since our TV timer would have normally gone off around 8:30am. The TV wasn't on, so I was disoriented in what the time was. I manually turned on the tv, just a few minutes before the second plane hit the WTC Tower TWO. It was so earie, something that I thought I would NEVER see. I immediately called my mom, who quickly filled me in on what was going on. My mom was worried, as my dad (at that time) worked for a major chemical company in the area, and was having a hard time getting ahold of him. I immediately tried to reach my DH on his cell, and by then, most of the cell systems were overloaded. By now, the Pentagon had been hit, and they were talking about other planes being hijacked also. I finally got a call from my DH, saying that all their classes had been cancelled, and the campus evacuated, as a precaution, so he was on his way home. By this time, there was talk of biological and nuclear weapons possibly being used, and I was FREAKED out.
My DH was home for about 2minutes when Tower TWO collapsed, and we both spent most of the day glued to the TV, knowing that the world we lived in would NEVER BE THE SAME AGAIN. To this day, I cannot see images of the WTC without breaking down. I have not been to Ground Zero since the tragedy (I have purposely AVOIDED the site on every visit to NYC since that fate-full day)....it's just TOO SAD.
I did not know anyone specifically that perished that day, but my heart aches for EVERYONE who was affected by the tragedy of 9/11.