oh, my god! oh, my god! >> if you think all fireworks shows look alike, take a look at this. it's not quite the show these spectators thought they would see. july 4th, 2012. one of the largest annual fireworks displays in country, the big bay boom, is set to go off across multiple barges in the san diego bay. the event takes nearly a full year of planning by executive producer sandy purdon. he raises the $400,000 to fund the massive display of more than 7,000 fireworks. the night of the event purdon hosts a viewing party for his sponsors. >> i was on my deck at my house entertaining the sponsors.