over the country to take part in what's going to be perhaps the largest gathering here ever. we'll have the traditional ceremony that begins at 8:46 tomorrow, with a moment of silence and then the reading of the names of those lost which will last for about four hours or so. today people are coming already and reflecting and here is some of what folks had to say on their thoughts on this occasion. >> i think about the people that lost their lives that day and hence why i wanted to make this walk and recount that and feel maybe what they were feeling. >> schools should do a better job teaching kids what happened on 9/11. >> reporter: why do you say that? >> i feel going through high school, i know it because my mom taught me. >> it's really surreal. i mean, i walk by this every day to work and it just becomes part of the view, but when it hits 20 years, it really makes you reassess and think about what