It is Day 39, October 30, 2004, on the island, Locke and Boone Carlyle (Ian Somerhalder) build a trebuchet in an effort to break open the hatch window. When this fails, an exasperated Locke pounds the hatch. Boone notices a shard in Locke's leg but Locke says he feels no pain and that night he discovers he is losing the feeling in his legs.