fireworks display. eye expect to see fireworks. when you attend a fireworks display, you expect fireworks but not like this. what went wrong? in southeastern pennsylvania, a holiday celebration goes from festive to fearsome in the blink of an eye. >> oh, my god. >> what the -- what the -- >> july 4th, 2010, the town is celebrating more than american independence. the 7,000 residents are also celebrating their hometown's big birthday. lifelong natives look forward to the evening festivities. palmyra was celebrating and it was a big deal for the community. we had vendors and rides set up. things for the kids and adults to do. >> the night will be topped off by a fireworks display at the