would never work again because no one had ever taken a film 100 days over schedule." Spielberg himself was not present for the shooting of the final scene in which the shark explodes, as he believed that the crew were planning to throw him in the water when the scene was done. It has since become a tradition for Spielberg to be absent when the final scene of one of his films is being shot. Afterward, underwater scenes were shot at the Metro-Goldwyn-Mayer water tank in Culver City, with stuntmen Dick Warlock and Frank James Sparks as stand-ins for Dreyfuss in the scene where the shark attacks the cage, as well as near Santa Catalina Island, California. Fields, who had completed a rough cut of the first two-thirds of the film, up until the shark hunt, finished the editing and reworked some of the material. According to Zanuck, "She actually came in and reconstructed some scenes that Steven had constructed for comedy and made them terrifying, and some scenes he shot to be terrifying and made them comedy scenes." The boat used for the Orca was brought to Los Angeles so the sound effects team could record sounds for both the ship and the underwater scenes. Two scenes were altered following test screenings. As the audience's screams had covered up Scheider's "bigger boat" one-liner, Brody's reaction after the shark jumps behind him was extended, and the volume of the line was raised. Spielberg also decided that he was greedy for "one more scream", and reshot the scene in which Hooper discovers Ben Gardner's body, using $3,000 of his own money after Universal refused to pay for the reshoot. The underwater scene was shot in Fields's swimming pool in Encino, California, using a lifecast latex model of Craig Kingsbury's head attached to a fake body, which was placed in the wrecked boat's hull. To simulate the murky waters of Martha's Vineyard, powdered milk was poured into the pool, which was then covered with a tarpaulin. Music Soundtrack John Williams composed the film's score, which earned him an Academy Award and was later ranked the sixth-greatest score by the American Film Institute. The main "shark" theme, a simple alternating pattern of two notes—variously identified as "E and F" or "F and F sharp"—became a classic piece of suspense music, synonymous with approaching danger (see leading-tone). Williams described the theme as "grinding away