<P> The group try to leave on Widmore's sub, and Kate is shot through the right collarbone . Once on board, while Jack is tending to Kate's wound, they discover that the Man in Black has placed a C4 explosive on board . Sawyer inadvertently causes the timer to count down faster and Sayid, Jin and Sun are killed in the resulting explosion . Jack asks Hurley to take care of Kate and make sure that he takes her to safety off the sinking vessel . On the shore, Kate races over to Jack and is relieved to find him safe . Kate, Jack and Hurley mourn the loss of their friends while Sawyer remains unconscious . </P> <P> As the Man in Black starts to destroy the Island, Kate helps Jack kill him by shooting him . Jack is wounded in the fight with' Locke' and he and Kate part for the final time due to their different destinies . Jack and Kate share a passionate kiss and declare their love for each other one last time before Jack leaves with Hurley to save the Island, and Kate goes to fulfill her promise to find Claire before departing on the Ajira plane, piloted by Frank . Along the way, they find Claire, who is scared to leave the island as she feels she is no longer a fit mother . Kate convinces her that her worries are normal and promises to help her . Kate escapes the island on the plane with Claire, Sawyer, Miles, Frank and Richard - Kate hand in hand with Claire . </P> <P> In the Sideways, Kate remembers her life when she helps deliver Aaron at the concert . Kate waits at the concert so she can reunite with Jack . She finds him and tells him "I've missed you so much", a reference that she probably lived a long life after leaving the Island and missed Jack profoundly . Jack eventually awakens and remembers Kate and his friends . Together with Jack at her side, they move on together . </P> <P> Around 75 women of different shapes, sizes, ethnicities and ages auditioned to be Kate, including Yunjin Kim, who later played the role of Sun - Hwa Kwon . In the initial plans, Jack was going to die midway through the first episode and then Kate would emerge as the leader . She was not going to be a fugitive, instead her husband was going to go to the bathroom shortly before the plane split in mid-air and she would remain adamant on the Island that he was alive . This ended up being used for Rose's character . The producers were impressed with Canadian Evangeline Lilly's audition, as she displayed the confidence with vulnerability that they were looking for . As this was Lilly's first role, she had difficulty obtaining a visa to work in the United States . She was supposed to start on the first day of filming, but the schedule was rearranged to give her more time and, in the meantime, the producers began auditioning again in case the visa did not come through . However, during one of the auditions, they got an email confirming that she had obtained her visa and could start work on the show . Executive producer Damon Lindelof told about Lilly's casting: </P>

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