>> andrea berkman is shopping for sparklers with her 5-year-old son when she notices a man who appear to be drunk holding a beer bottle in the back of the tent. suddenly she hears the crackle and hiss of a lit fuse. >> we had heard some of the -- [ hiss ] and then kaboom. had it gone through the roof, it would have been wonderful, but it didn't go through the roof. it bounced back down off the top of the roof and it was a domino effect from there. >> the lit firework sets off a chain reaction. in an instant, a rainbow of explosions fills the tent and the night sky. andrea berkman and her son are caught in the crossfire. >> and you know, my son, he turns around to see where mommy is. and i looked at him. he goes, mama, mama. i said run, run as fast as you