 It first aired on April 6, 2005, on ABC.While trying to make contact with the outside world from a plane discovered in the jungle tree canopy, Boone Carlyle (Ian Somerhalder) is critically injured when the plane suddenly shifts and crashes to the ground, so Jack Shephard (Matthew Fox) desperately tries to save his life.The flashbacks in this episode revolve around Jack's marriage to a former patient, Sarah (Julie Bowen).