It is his awakening in the jungle that opens the series in the first scene of the pilot episode. After arriving on the Island, Jack takes on a critical leadership role, and is looked to by most of the remaining survivors for guidance. His leadership circle includes John Locke and Sayid, and he is close friends with Hurley, Charlie, and Rose. He has a close friendship with Kate, whom he meets immediately after the crash. He develops a long-running rivalry with Sawyer, based partly on his friendship with Kate, whom Sawyer despises and distrusts. By the end of the first season, Jack and Locke have developed a rivalry based on their differing interpretations of the island and the crash, with Locke telling Jack that he (Locke) is a "man of faith" whereas Jack is a man of science.