Before opening it to the public, John Hammond invited Alan Grant, Ellie Sattler, Ian Malcolm, Donald Gennaro and his two grandchildren (Lex and Tim) to experience the park, mainly due to his investors pressing an inspection. However, a sequence of disasters leads to the closure of the park. This event is nicknamed the Isla Nublar Incident or "The InGen Incident". Towards the end of the novel after the survivors are evacuated, the island is bombarded by the Costa Rican Air Force, destroying Jurassic Park and killing the dinosaurs.